Dyfyniad APA

Barnard, J. D. (1962). The macmillan science life series book 4 (rev.ed.). Macmillan.

Dyfyniad Arddull Chicago

Barnard, John Darrell. The Macmillan Science Life Series Book 4. rev.ed. New York: Macmillan, 1962.

Dyfyniad MLA

Barnard, John Darrell. The Macmillan Science Life Series Book 4. rev.ed. Macmillan, 1962.

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