Dyfyniad APA

Marx, M. H., & Hillix, W. A. (1963). Systems and theories in psychology. McGraw-Hill.

Dyfyniad Arddull Chicago

Marx, Melvin Herman, and William Allen Hillix. Systems and Theories in Psychology. New York: McGraw-Hill, 1963.

Dyfyniad MLA

Marx, Melvin Herman, and William Allen Hillix. Systems and Theories in Psychology. McGraw-Hill, 1963.

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