Cita APA (7th ed.)
Cross, W. (1976). The weekend education source book. Harper's Magazine Press.
Cita Chicago (17th ed.)
Cross, Wilbur. The Weekend Education Source Book. New York: Harper's Magazine Press, 1976.
Cita MLA (9th ed.)
Cross, Wilbur. The Weekend Education Source Book. Harper's Magazine Press, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.