What do you put in a reference when the page lacks numbering? Is there any abbreviation to denote such a case? I’m working on some manuscripts that are numbered only on the front side. I refer to them as folium, abbreviated fol. Unfortunately, some of the sheets aren’t numbered at all(???)
The Chicago Manual of Style provides a list of abbreviations used in scholarly works.
n.p. stands for no place, no publisher, no page (presumably whichever one is missing).