APA (7th ed.) Citation

Williams, E. (1973). A valentine for Noël: Four variations on a scheme. Ed. Mayer.

Chicago Style (17th ed.) Citation

Williams, Emmett. A Valentine for Noël: Four Variations on a Scheme. Stuttgart [u.a.]: Ed. Mayer, 1973.

MLA (9th ed.) Citation

Williams, Emmett. A Valentine for Noël: Four Variations on a Scheme. Ed. Mayer, 1973.