Citations in PDFs produced by Bookdown are incorrect - r

Question

I am making a book with bookdown. The HTML version renders exactly as I would expect it to.
For example, the
5. Read Chapter 7 of Myers
[-#myers_2013_qualitativeresearchbusiness p. 73--91] — 60 minutes.
Renders correctly as:
Read Chapter 7 of Myers (2013, pp. 73–91) — 60 minutes.
However, in the PDF version the citation is rendered as the bibtex key; i.e.,
5. Read Chapter 7 of Myers (myers_2013_qualitativeresearchbusiness) — 60 minutes.
My script does the follwing to make the pdf.
Rscript -e "bookdown::render_book('index.Rmd', 'bookdown::pdf_book')"
and my _output.yml looks like this:
bookdown::gitbook:
css: style.css
split_bib: no
config:
toc:
collapse: section
before: |
<li>Qualitative Research Methods</li>
after: |
<li>Published with bookdown</li>
edit: https://github.com/psmith1303/business705/edit/master/%s
download: ["pdf", "epub"]
bookdown::pdf_book:
includes:
in_header: preamble.tex
latex_engine: lualatex
citation_package: biblatex
keep_tex: yes
bookdown::epub_book: default
The actual pandoc command that gets run at the end of all this is:
/usr/local/bin/pandoc +RTS -K512m -RTS business705.utf8.md --to latex --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output business705.tex --table-of-contents --toc-depth 2 --template /usr/home/psmith/NAS/Programming/R/Libs/rmarkdown/rmd/latex/default-1.17.0.2.tex --number-sections --highlight-style tango --latex-engine lualatex --biblatex --include-in-header preamble.tex --variable graphics=yes --variable 'geometry:margin=1in' --variable tables=yes --standalone --bibliography book.bib
I suspect I need to run the latex 'engine' again to to get the citations right, but I can't figure out how to do that.

Answer 1

So, the fix seems to have been to move from pdflatex to xelatex as the LaTeX engine. I did this by changing _output.yml
bookdown::gitbook:
css: style.css
split_bib: no
config:
toc:
collapse: section
before: |
<li>Qualitative Research Methods</li>
after: |
<li>Published with bookdown</li>
edit: https://github.com/psmith1303/business705/edit/master/%s
download: ["pdf", "epub"]
bookdown::pdf_book:
includes:
in_header: preamble.tex
latex_engine: xelatex
citation_package: biblatex
keep_tex: yes
bookdown::epub_book: default
(That was a non-trivial exercise for me, I had to throw out my texlive installation, and switch to TinyTex to get biber working correctly).