Cita APA (7a ed.)

Spellman, F. R., & Bieber, R. M. (2012). Environmental health and science desk reference. Government Institutes.

Cita Chicago Style (17a ed.)

Spellman, Frank R., y Revonna M. Bieber. Environmental Health and Science Desk Reference. Lanham, Md: Government Institutes, 2012.

Cita MLA (9a ed.)

Spellman, Frank R., y Revonna M. Bieber. Environmental Health and Science Desk Reference. Government Institutes, 2012.