Dyfyniad APA

Lahey, B. B., & Benjamin B. Lahey. (2009). Psychology: An introduction. Boston: McGraw-Hill Higher Education.

Dyfyniad Arddull Chicago

Lahey, Benjamin B., và Benjamin B. Lahey. Psychology: An Introduction. Boston: McGraw-Hill Higher Education, 2009.

Dyfyniad MLA

Lahey, Benjamin B., và Benjamin B. Lahey. Psychology: An Introduction. Boston: McGraw-Hill Higher Education, 2009.

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