Lua APA (7ú heag.)

TRAVERS, R. M. (1969). An introduction to educational research.-- ed.3. The MacMillan Company.

Lua i Stíl Chicago (17ú heag.)

TRAVERS, Robert M.W. An Introduction to Educational Research.-- Ed.3. New York: The MacMillan Company, 1969.

Lua MLA (9ú heag.)

TRAVERS, Robert M.W. An Introduction to Educational Research.-- Ed.3. The MacMillan Company, 1969.

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