APA-viite

Speth, G. J. (2005). Global environmental challenges: Transitions to a sustainable world. Orient Longman.

Chicago-tyylinen lähdeviittaus

Speth, Gustave James. Global Environmental Challenges: Transitions to a Sustainable World. Hyderabad: Orient Longman, 2005.

MLA-viite

Speth, Gustave James. Global Environmental Challenges: Transitions to a Sustainable World. Orient Longman, 2005.