Cita APA (7th ed.)
Travers, R. M. (1978). An introduction to educational research (4th ed.). Macmillan.
Cita Chicago (17th ed.)
Travers, Robert M.W. An Introduction to Educational Research. 4th ed. New York: Macmillan, 1978.
Cita MLA (9th ed.)
Travers, Robert M.W. An Introduction to Educational Research. 4th ed. Macmillan, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.