如何使用rmarkdown和biblatex去掉引用中的括号

我绝对是RMarkdown和Latex的初学者。所以，这是我第一次尝试写论文。我从我的大学得到了一个模板，我使用它，但我对引用有一个问题。我想使用apa风格，这在参考书目中非常有效。但是，引文的日期周围有括号，如下所示：

---
geometry: "a4paper,top=2cm,bottom=2cm,left=3.5cm,right=2cm"
fontsize: 12pt
linestretch: 1.5
automark: yes
indent: true
toc: false
classoption:
  - DIV=calc
  - headsepline=true
KOMAoptions:
  - headings=standardclasses
  - DIV=last  
table_caption: true
figure_caption: true
includes:  
  in_header: figure_placement.tex 
link-citations: yes
knit: "bookdown::render_book"
output:
  bookdown::pdf_book:
    includes:
      in_header: tex/praeambel.tex
    keep_tex: yes
    latex_engine: pdflatex
citation_package: biblatex
bibliography: bib/literatur.bib
biblio-style: apa
---

@techreport{behrendtStrategieanalytischeBetrachtungFuer2016,
    address = {Berlin},
    type = {Inputpapier},
    title = {Strategieanalytische {Betrachtung} für eine {Green} {Economy}},
    language = {de},
    institution = {izt - Institut für Zukunftsstudien und Technologiebewertung},
    author = {Behrendt, Siegfried and Göll, Edgar and Korte, Friederike},
    year = {2016},
    pages = {37}
        }

（Behrendt等人（2016），S.1）

我如何去掉日期前后的括号？提前谢谢

我的YAML标题如下所示：

---
geometry: "a4paper,top=2cm,bottom=2cm,left=3.5cm,right=2cm"
fontsize: 12pt
linestretch: 1.5
automark: yes
indent: true
toc: false
classoption:
  - DIV=calc
  - headsepline=true
KOMAoptions:
  - headings=standardclasses
  - DIV=last  
table_caption: true
figure_caption: true
includes:  
  in_header: figure_placement.tex 
link-citations: yes
knit: "bookdown::render_book"
output:
  bookdown::pdf_book:
    includes:
      in_header: tex/praeambel.tex
    keep_tex: yes
    latex_engine: pdflatex
citation_package: biblatex
bibliography: bib/literatur.bib
biblio-style: apa
---

@techreport{behrendtStrategieanalytischeBetrachtungFuer2016,
    address = {Berlin},
    type = {Inputpapier},
    title = {Strategieanalytische {Betrachtung} für eine {Green} {Economy}},
    language = {de},
    institution = {izt - Institut für Zukunftsstudien und Technologiebewertung},
    author = {Behrendt, Siegfried and Göll, Edgar and Korte, Friederike},
    year = {2016},
    pages = {37}
        }

我的.bib条目如下所示：

---
geometry: "a4paper,top=2cm,bottom=2cm,left=3.5cm,right=2cm"
fontsize: 12pt
linestretch: 1.5
automark: yes
indent: true
toc: false
classoption:
  - DIV=calc
  - headsepline=true
KOMAoptions:
  - headings=standardclasses
  - DIV=last  
table_caption: true
figure_caption: true
includes:  
  in_header: figure_placement.tex 
link-citations: yes
knit: "bookdown::render_book"
output:
  bookdown::pdf_book:
    includes:
      in_header: tex/praeambel.tex
    keep_tex: yes
    latex_engine: pdflatex
citation_package: biblatex
bibliography: bib/literatur.bib
biblio-style: apa
---

@techreport{behrendtStrategieanalytischeBetrachtungFuer2016,
    address = {Berlin},
    type = {Inputpapier},
    title = {Strategieanalytische {Betrachtung} für eine {Green} {Economy}},
    language = {de},
    institution = {izt - Institut für Zukunftsstudien und Technologiebewertung},
    author = {Behrendt, Siegfried and Göll, Edgar and Korte, Friederike},
    year = {2016},
    pages = {37}
        }

---

编辑：解决方法是使用方括号[]而不是圆括号（）

我把太多精力放在了标题上。问题就在我引用的括号里。我使用（）而不是[]。这就是问题所在。

您能否编辑此解决方案并添加所需的版本？