Dyfyniad APA

Gregory, W. H., & Goldman, E. H. (1965). Biological science for high school. Ginn.

Dyfyniad Arddull Chicago

Gregory, William Hawthorne, and Edward H. Goldman. Biological Science for High School. Boston: Ginn, 1965.

Dyfyniad MLA

Gregory, William Hawthorne, and Edward H. Goldman. Biological Science for High School. Ginn, 1965.

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