Dyfyniad APA
Bollet, A. J. (2004). Plagues & poxes: The impact of human history on epidemic disease (2nd ed.). Demos.
Dyfyniad Arddull Chicago
Bollet, Alfred J. Plagues & Poxes: The Impact of Human History on Epidemic Disease. 2nd ed. New York: Demos, 2004.
Dyfyniad MLA
Bollet, Alfred J. Plagues & Poxes: The Impact of Human History on Epidemic Disease. 2nd ed. Demos, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.