Dyfyniad APA

Childe, V. G., & Clark, G. (1942). What happened in history. Penguin books.

Dyfyniad Arddull Chicago

Childe, V. Gordon, and Grahame Clark. What Happened in History. Baltimore: Penguin books, 1942.

Dyfyniad MLA

Childe, V. Gordon, and Grahame Clark. What Happened in History. Penguin books, 1942.

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