Dyfyniad APA

Whitney, F. L. (1950). The elements of research. New York: Prentice-Hall.

Dyfyniad Arddull Chicago

Whitney, Frederick Lamson. The Elements of Research. New York: Prentice-Hall, 1950.

Dyfyniad MLA

Whitney, Frederick Lamson. The Elements of Research. New York: Prentice-Hall, 1950.

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