Set the header

#+TYPST: #set page(paper: "a4", margin: (left: 30mm, right: 30mm, top: 30mm, bottom: 30mm))
#+TYPST:  #set text(font: "New Computer Modern", size: 12pt)

Set the citation mode

#+CITE_EXPORT: typst apa

Set how to print the Bibliography

#+print_bibliography: :title Bibliography Title

Function to export the file to typst and then as a pdf

org-typst-export-to-pdf