Dyfyniad APA

ENCYCLOPEDIA.. & MITZEL, H. E. (1969). Encyclopedia of educational research vol.4.-- Ed. 5. The Free Press.

Dyfyniad Arddull Chicago

ENCYCLOPEDIA.. and Harold E. MITZEL. Encyclopedia of Educational Research Vol.4.-- Ed. 5. New York: The Free Press, 1969.

Dyfyniad MLA

ENCYCLOPEDIA.. and Harold E. MITZEL. Encyclopedia of Educational Research Vol.4.-- Ed. 5. The Free Press, 1969.

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