Dyfyniad APA

Willis, R. J. B., & Marshall, D. (2005). The AIDS pandemic. Stanborough Press.

Dyfyniad Arddull Chicago

Willis, Richard J. B., and David Marshall. The AIDS Pandemic. Grantham: Stanborough Press, 2005.

Dyfyniad MLA

Willis, Richard J. B., and David Marshall. The AIDS Pandemic. Stanborough Press, 2005.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.