Cita APA (7th ed.)

Gega, P. C. (1994). Concepts and experiences in elementary school science (2nd ed.). Macmillan.

Cita Chicago (17th ed.)

Gega, Peter C. Concepts and Experiences in Elementary School Science. 2nd ed. New York: Macmillan, 1994.

Cita MLA (9th ed.)

Gega, Peter C. Concepts and Experiences in Elementary School Science. 2nd ed. Macmillan, 1994.