See https://www.youtube.com/watch?v=rRR-5NSpKyE for an overview of what to do. basically you need a csl file that provides the style you want, and you specify it like this in the org file or in default settings. You may also need a locale file if you are not blogging in english.

#+csl-style: apa-5th-edition.csl

#+csl-locale: en-US


You can find a basic example org file for html export with CSL at https://github.com/jkitchin/org-ref/blob/master/examples/basic-csl.org

Here is a minimal way to export your blog file I suppose.
(let ((org-export-before-parsing-hook '(org-ref-csl-preprocess-buffer)))
  (org-open-file (org-html-export-to-html)))

John

-----------------------------------
Professor John Kitchin (he/him/his)
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803


On Tue, Nov 30, 2021 at 12:16 PM András Simonyi <andras.simonyi@gmail.com> wrote:
Dear Joseph,

unfortunately, my note on the `citeproc-org` page has become kind of
misleading and has to be updated because org-ref didn't switch to the
new org-cite citation syntax after all, although this was the plan for
a while. I think if you wish to use org-ref 3 then you should simply
remove citeproc-org entirely -- if I understand correctly the latest
version of org-ref supports the old syntax as well and is capable of
CSL-based export (among others) on its own.

best regards,
András

On Tue, 30 Nov 2021 at 18:00, Joseph Vidal-Rosset
<joseph@vidal-rosset.net> wrote:
>
>
> Dear John, and dear Andras,
>
> Having updated my org-ref to the last version, I see that the html
> export of bibliography does not work any longer for my blog.
>
> Reading Andras's note here
> https://github.com/andras-simonyi/citeproc-org
> I confess that I am lost.
>
> What have I to do to not waste too much time with this problem?
>
> Best wishes,
>
> Jo.
>