Cita APA (7a ed.)
Turk, A., Turk, J., & Wittes, J. T. (1972). Ecology, pollution, environment. W.B Saunders.
Cita Chicago Style (17a ed.)
Turk, Amos, Jonathan Turk, y Janet T. Wittes. Ecology, Pollution, Environment. London: W.B Saunders, 1972.
Cita MLA (9a ed.)
Turk, Amos, et al. Ecology, Pollution, Environment. W.B Saunders, 1972.
Precaución: Estas citas no son 100% exactas.