Cita APA (7th ed.)

Chiappetta, E. L., & Koballa, T. R. (2002). Science instruction in the middle and secondary schools (5th ed.). Merrill Prentice Hall.

Cita Chicago (17th ed.)

Chiappetta, Eugene L., i Thomas R. Koballa. Science Instruction in the Middle and Secondary Schools. 5th ed. Upper Saddle River, N.J: Merrill Prentice Hall, 2002.

Cita MLA (9th ed.)

Chiappetta, Eugene L., i Thomas R. Koballa. Science Instruction in the Middle and Secondary Schools. 5th ed. Merrill Prentice Hall, 2002.