Dyfyniad APA

Charters, W. W., Smiley, D. F., & Strang, R. M. (1941). Habits, healthful and safe. New York: Macmillan.

Dyfyniad Arddull Chicago

Charters, Werrett Wallace, Dean F. Smiley, và Ruth M. Strang. Habits, Healthful and Safe. New York: Macmillan, 1941.

Dyfyniad MLA

Charters, Werrett Wallace, Dean F. Smiley, và Ruth M. Strang. Habits, Healthful and Safe. New York: Macmillan, 1941.

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