Kenneth G. Wilson (1923–). The Columbia Guide to Standard American English. 1993.
recto, verso (nn.)
These Latin terms are the technical names for the front and back surfaces of a page: the recto is the right-hand (usually odd-numbered) page in an open book, and the back of that page (which, when the page is turned, becomes the left-hand page, usually even-numbered) is the verso. These two may be italicized as foreign words. See PLURALS OF NOUNS ENDING IN -O.
