Dyfyniad APA

Otto, J. H., & Towle, A. (1973). Modern Biology. Richard and winston.

Dyfyniad Arddull Chicago

Otto, James H., and Alert Towle. Modern Biology. Holt: Richard and winston, 1973.

Dyfyniad MLA

Otto, James H., and Alert Towle. Modern Biology. Richard and winston, 1973.

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