Dyfyniad APA

Bernstein, R., & Bernstein, S. (1982). Biology: The Study of Life. New York: Harcourt Brace Jovanovich.

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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