Dyfyniad APA

Johnson, G. B. (2006). The living world. New York: McGraw-Hill Higher Education.

Dyfyniad Arddull Chicago

Johnson, George B. The Living World. New York: McGraw-Hill Higher Education, 2006.

Dyfyniad MLA

Johnson, George B. The Living World. New York: McGraw-Hill Higher Education, 2006.

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