Dyfyniad APA

Corey, G. (1990). I never knew I had a choice (4th.ed.). Brooks.

Dyfyniad Arddull Chicago

Corey, Gerald. I Never Knew I Had a Choice. 4th.ed. California: Brooks, 1990.

Dyfyniad MLA

Corey, Gerald. I Never Knew I Had a Choice. 4th.ed. Brooks, 1990.

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