Dyfyniad APA

Graham, B. (1983). Approaching hoofbeats: The four horsemen of the apocalypse. Word.

Dyfyniad Arddull Chicago

Graham, Billy. Approaching Hoofbeats: The Four Horsemen of the Apocalypse. Waco: Word, 1983.

Dyfyniad MLA

Graham, Billy. Approaching Hoofbeats: The Four Horsemen of the Apocalypse. Word, 1983.

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