Dyfyniad APA

Jones, A. J. (1945). Principles of guidance (3rd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Jones, Arthur J. Principles of Guidance. 3rd ed. New York: McGraw-Hill, 1945.

Dyfyniad MLA

Jones, Arthur J. Principles of Guidance. 3rd ed. McGraw-Hill, 1945.

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