When choosing the "on page text" function for adding content to a Page, the font choices do not offer MLA or APA style / size 12 font. It only offers extra small through large text. Also, double spacing is not available via "on page text." This limits our options to uploading a Google doc if we want specific citation requirements followed.
Thank you for reaching out for assistance through the Community! At this time, this isn't a feature in Learning but I will be happy to submit this as a feature request to our Product Team for review. If they need any additional information they will reach out to you.
Have a great day!