APA (7th ed.) Citation

Staff, F. (1969). The Valentine & its origins. Lutterworth Press.

Chicago Style (17th ed.) Citation

Staff, Frank. The Valentine & Its Origins. London: Lutterworth Press, 1969.

MLA (9th ed.) Citation

Staff, Frank. The Valentine & Its Origins. Lutterworth Press, 1969.

Warning: These citations may not always be 100% accurate.