Dyfyniad APA

Hollingsworth,M J, & Bowler,K. (1972). Principles and Processes of Biology. Chapman.

Dyfyniad Arddull Chicago

Hollingsworth,M J, and Bowler,K. Principles and Processes of Biology. London: Chapman, 1972.

Dyfyniad MLA

Hollingsworth,M J, and Bowler,K. Principles and Processes of Biology. Chapman, 1972.

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