Dyfyniad APA

Scarr, S., & James vander zanden. (1987). Understanding psychology (5th ed.). Random.

Dyfyniad Arddull Chicago

Scarr, Sandra, and James vander zanden. Understanding Psychology. 5th ed. New york: Random, 1987.

Dyfyniad MLA

Scarr, Sandra, and James vander zanden. Understanding Psychology. 5th ed. Random, 1987.

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