APA (7th ed.) Zitazioa
Blough, G. O., & Schwartz, J. (1990). Elementary school science and how to teach it (8th ed.). Harcourt brace.
Chicago Style (17th ed.) Zitazioa
Blough, Glenn O., eta Julius Schwartz. Elementary School Science and How to Teach It. 8th ed. Philadelphia: Harcourt brace, 1990.
MLA (9th ed.) Zitazioa
Blough, Glenn O., eta Julius Schwartz. Elementary School Science and How to Teach It. 8th ed. Harcourt brace, 1990.
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