Cita APA (7th ed.)

Trefil, J. S., Calvo, R. A., & Cutler, K. (2005). Physica science. McDougal Littell.

Cita Chicago (17th ed.)

Trefil, James S., Rita Ann Calvo, i Kenneth Cutler. Physica Science. Evanston, Ill: McDougal Littell, 2005.

Cita MLA (9th ed.)

Trefil, James S., et al. Physica Science. McDougal Littell, 2005.