APA-Zitierstil (7. Ausg.)

(1991). Earth and Us: Population, resources, environment, development (1. publ.). Butterworth/Heinemann.

Chicago-Zitierstil (17. Ausg.)

Earth and Us: Population, Resources, Environment, Development. 1. publ. Oxford u.a: Butterworth/Heinemann, 1991.

MLA-Zitierstil (9. Ausg.)

Earth and Us: Population, Resources, Environment, Development. 1. publ. Butterworth/Heinemann, 1991.