Dyfyniad APA

O'brian, P. (2002). Post captain. HarperCollins Publishers.

Dyfyniad Arddull Chicago

O'brian, Patrick. Post Captain. London: HarperCollins Publishers, 2002.

Dyfyniad MLA

O'brian, Patrick. Post Captain. HarperCollins Publishers, 2002.

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