Cita APA (7th ed.)

Speth, J. G. (2008). Global Environmental Challenges: Transitions to a Sustainable World. Orient BlackSwan.

Cita Chicago (17th ed.)

Speth, James Gustave. Global Environmental Challenges: Transitions to a Sustainable World. New Delhi: Orient BlackSwan, 2008.

Cita MLA (9th ed.)

Speth, James Gustave. Global Environmental Challenges: Transitions to a Sustainable World. Orient BlackSwan, 2008.