Dyfyniad APA

Bjork, W., Schraer, W. D., Horn, R. D., & Stoltze, H. J. (1995). Biology: The study of life (5th ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Bjork, Warren, William D. Schraer, Ruth D. Horn, and Herbert J. Stoltze. Biology: The Study of Life. 5th ed. Needham, Massachusetts: Prentice Hall, 1995.

Dyfyniad MLA

Bjork, Warren, et al. Biology: The Study of Life. 5th ed. Prentice Hall, 1995.

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