Dyfyniad APA

Gregory, W. H., & Goldman, E. H. (1971). Teachers manual to accompany Biological science, revised edition. Ginn and Co..

Dyfyniad Arddull Chicago

Gregory, William H., and Edward H. Goldman. Teachers Manual to Accompany Biological Science, Revised Edition. [Lexington, Mass.]: Ginn and Co., 1971.

Dyfyniad MLA

Gregory, William H., and Edward H. Goldman. Teachers Manual to Accompany Biological Science, Revised Edition. Ginn and Co., 1971.

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