Cita APA (7a ed.)

Haas, P. M., Keohane, R. O., & Levy, M. A. (1993). Institutions for the earth: Sources of effective international environmental protection. MIT Press.

Cita Chicago Style (17a ed.)

Haas, Peter M., Robert Owen Keohane, y Marc A. Levy. Institutions for the Earth: Sources of Effective International Environmental Protection. Cambridge, Massachusetts [etc.]: MIT Press, 1993.

Cita MLA (9a ed.)

Haas, Peter M., et al. Institutions for the Earth: Sources of Effective International Environmental Protection. MIT Press, 1993.