Lua APA (7ú heag.)

Novak D., J. (1972). A summary of research in science education for 1972. ERIC.

Lua i Stíl Chicago (17ú heag.)

Novak D., Joseph. A Summary of Research in Science Education for 1972. Ohio, Estados Unidos: ERIC, 1972.

Lua MLA (9ú heag.)

Novak D., Joseph. A Summary of Research in Science Education for 1972. ERIC, 1972.

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