APA (7th ed.) Citation

Gega, P. C., Gega, P. C. C. a. e. i. e. s. s. 1., & Gega, P. C. H. t. t. e. s. s. 1. (1994). Science in elementary education (7th ed.). Macmillan.

Chicago Style (17th ed.) Citation

Gega, Peter C., Peter C. Concepts and experiences in elementary school science. 1994 Gega, and Peter C. How to teach elementary school science. 1994 Gega. Science in Elementary Education. 7th ed. New York: Macmillan, 1994.

MLA (9th ed.) Citation

Gega, Peter C., et al. Science in Elementary Education. 7th ed. Macmillan, 1994.