Dyfyniad APA

Tortora,Gerard J & Derrickson,Bryan H. (2009). Principles of anatomy and phy iology (12th edn.). John Wiley & Sons,Inc.

Dyfyniad Arddull Chicago

Tortora,Gerard J & Derrickson,Bryan H. Principles of Anatomy and Phy Iology. 12th edn. Hoboken: John Wiley & Sons,Inc, 2009.

Dyfyniad MLA

Tortora,Gerard J & Derrickson,Bryan H. Principles of Anatomy and Phy Iology. 12th edn. John Wiley & Sons,Inc, 2009.

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