Cita APA (7th ed.)

(1991). Resources, enviroment, and population: Present knowledge, future options. The Population Council.

Cita Chicago (17th ed.)

Resources, Enviroment, and Population: Present Knowledge, Future Options. Nueva York: The Population Council, 1991.

Cita MLA (9th ed.)

Resources, Enviroment, and Population: Present Knowledge, Future Options. The Population Council, 1991.