Cita APA (7a ed.)

Sandler, T. (1997). Global challenges: An approach to environmental, political, and economic problems. Cambridge University Press.

Cita Chicago Style (17a ed.)

Sandler, Todd. Global Challenges: An Approach to Environmental, Political, and Economic Problems. Cambridge, UK ; New York, NY, USA: Cambridge University Press, 1997.

Cita MLA (9a ed.)

Sandler, Todd. Global Challenges: An Approach to Environmental, Political, and Economic Problems. Cambridge University Press, 1997.