Dyfyniad APA

Gaerlan, J. E., Limpingco, D. A., & Tria, G. E. (2008). Principles of mental hygiene (5th ed.). KEN.

Dyfyniad Arddull Chicago

Gaerlan, Josefina E., Delia A. Limpingco, and Geraldine E. Tria. Principles of Mental Hygiene. 5th ed. Quezon City, Philippines: KEN, 2008.

Dyfyniad MLA

Gaerlan, Josefina E., et al. Principles of Mental Hygiene. 5th ed. KEN, 2008.

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