Cita APA (7a ed.)

Brown, L. R., & Jacobson, J. L. (1986). Our demographically divided world. Worldwatch Institute.

Cita Chicago Style (17a ed.)

Brown, Lester R., y Jodi L. Jacobson. Our Demographically Divided World. Washington, DC: Worldwatch Institute, 1986.

Cita MLA (9a ed.)

Brown, Lester R., y Jodi L. Jacobson. Our Demographically Divided World. Worldwatch Institute, 1986.