Cita APA (7th ed.)

Gega, P. C., & Peters, J. M. (1998). Science in elementary education (8th ed.). Merrill.

Cita Chicago (17th ed.)

Gega, Peter C., i Joseph M. Peters. Science in Elementary Education. 8th ed. Upper Saddle River, NJ: Merrill, 1998.

Cita MLA (9th ed.)

Gega, Peter C., i Joseph M. Peters. Science in Elementary Education. 8th ed. Merrill, 1998.