Need help - Implement "Cite article"

Hello community,
I hope you can help me. I am scholar and want to publish my articles on my website. In the last few days I prepared a website on jekyll / github. The last step is to make a box on “post.html” to show something like this:

Cite this article:
{{ author.display_name }}, "{{ post.title }}" 
in {{ }}, {{ | date_to_string: "ordinal", "US" }}, {{ post.url }}.

I created a file cite.html and inserted into post.html. Unfortunately it doesnt show me anything. I see only “Cite this article:”. Can someone help me to correct my cite.html to make it work. Thank you.

Here is my cite.html

<p><b>Cite this article:</b></p>
<div lass="after-post-cats">
 <div class="h-100 card-group">
                    <div class="card">
                        <div class="card-body">
                            <h6 class="card-text">
                              {{ author.display_name }}, <a class="text-dark" href="{{ site.baseurl }}{{ post.url }}">{{ post.title }}</a>
                              in {{ }}, {{ | date_to_string: "ordinal", "US" }}, {{ post.url }}.

Change post.title,, and post.url to page.title,, and page.url.

Thank you. It works now.