The New Partridge Dictionary of Slang and Unconventional English. 2005. pp. 327, 995. ISBN 0415212588.
Daniel Stern (2013). Swingland: Between the Sheets of the Secretive, Sometimes Messy, but Always Adventurous Swinging Lifestyle. p. 296. ISBN 1476732531.
Donald F. Reuter (2006). Gay-2-Zee: A Dictionary of Sex, Subtext, and the Sublime. p. 86. ISBN 0312354274.
