Lua APA (7ú heag.)

Travers, R. M. (1978). An introduction to educational research (4th ed.). Macmillan.

Lua i Stíl Chicago (17ú heag.)

Travers, Robert M.W. An Introduction to Educational Research. 4th ed. New York: Macmillan, 1978.

Lua MLA (9ú heag.)

Travers, Robert M.W. An Introduction to Educational Research. 4th ed. Macmillan, 1978.

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