Leyner, M., & Goldberg, B. (2005). Why do men have nipples?: Hundreds of questions you'd only ask a doctor after your third martini (First edition.). Three Rivers Press.

Leyner, Mark, and Billy Goldberg. Why Do Men Have Nipples?: Hundreds of Questions You'd Only Ask a Doctor After Your Third Martini. First edition. New York: Three Rivers Press, 2005.

Leyner, Mark, and Billy Goldberg. Why Do Men Have Nipples?: Hundreds of Questions You'd Only Ask a Doctor After Your Third Martini. First edition. Three Rivers Press, 2005.