APA (7th ed.) Citation

Blough, G. O., & Schwartz, J. (1990). Elementary school science and how to teach it (8th ed.). Harcourt brace.

Chicago Style (17th ed.) Citation

Blough, Glenn O., and Julius Schwartz. Elementary School Science and How to Teach It. 8th ed. Philadelphia: Harcourt brace, 1990.

MLA (9th ed.) Citation

Blough, Glenn O., and Julius Schwartz. Elementary School Science and How to Teach It. 8th ed. Harcourt brace, 1990.