Dyfyniad APA
Coutinho, E. M., & Segal, S. J. (1999). Is menstruation obsolete? Oxford University Press.
Dyfyniad Arddull Chicago
Coutinho, Elsimar M., and Sheldon J. Segal. Is Menstruation Obsolete? New York: Oxford University Press, 1999.
Dyfyniad MLA
Coutinho, Elsimar M., and Sheldon J. Segal. Is Menstruation Obsolete? Oxford University Press, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.