Dyfyniad APA
Dumas, A., & Coward, D. (1993). The black tulip. Oxford University Press.
Dyfyniad Arddull Chicago
Dumas, Alexandre, and David Coward. The Black Tulip. Oxford ; New York: Oxford University Press, 1993.
Dyfyniad MLA
Dumas, Alexandre, and David Coward. The Black Tulip. Oxford University Press, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.