A single sided printed sheet of paper is not necessarily a page, unless it is taken from a pre-existent order of sheets, or in the process of becoming part of such an order.
Find examples of a one-page publication as opposed to a one sheet side publication (e.g. leaflet, poster, card)? What about one page in a 4-page cover? Could I maybe find an example in Ian Hamilton Finlay's printed work? What about a one-page publication with additional colophon or other secondary text(s)?
A SINGLE PAGE
Prière de Réveil (JK, 2007)