Marshall Cavendish Corporation 2010. See and Laura M. Koelman, CA; et al. McDougal, David; Van Lieshout, Dave; Harting, John. Gentry, Cynthia W. Tom Dalzell, Terry Victor 2007. "Case-control study of human papillomavirus and oropharyngeal cancer". Jayson, Sharon 2005-10-19. Marshall Cavendish Corporation. D'Souza G; Kreimer AR; Viscidi R; et al. 1994. The Pregnant Couple's Guide to Sex, Romance, and Intimacy. Gloucester, Massachusetts USA: Fair Winds Press. Sandra Margot; Tonianne Robino 2002. "Correlation between oral sex and a low incidence of preeclampsia: A role for soluble HLA in seminal fluid? Freud, Sigmund 1916. Dunn, Elizabeth Yost Hammer 2008. Men in Love - Men's Sexual Fantasies: The Triumph of Love over Rage 1982 by. Journal of Reproductive Immunology. Robert J. "Fellatio by Fruit Bats Prolongs Copulation Time". Fellatio fuh-LAY-shee-oh is oral stimulation of the penis and scrotum.。
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