Dyfyniad APA

BERNSTEIN, R., & BERNSTEIN, S. (1982). Biology: The study of life. Harcourt Brace Jovanovich.

Dyfyniad Arddull Chicago

BERNSTEIN, Ruth, and Stephen BERNSTEIN. Biology: The Study of Life. New York: Harcourt Brace Jovanovich, 1982.

Dyfyniad MLA

BERNSTEIN, Ruth, and Stephen BERNSTEIN. Biology: The Study of Life. Harcourt Brace Jovanovich, 1982.

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