Dyfyniad APA

Scheffer, V. B. (1969). The year of the whale. New York: Charles Scribner's Sons.

Dyfyniad Arddull Chicago

Scheffer, Victor B. The Year of the Whale. New York: Charles Scribner's Sons, 1969.

Dyfyniad MLA

Scheffer, Victor B. The Year of the Whale. New York: Charles Scribner's Sons, 1969.

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