APA (7e ed.) Bronvermelding

Engelman, R., & LeRoy, P. (1993). Sustaining water: Population and the future of renewable water supplies. Washington: Population Action International.

Chicago (17e ed.) Bronvermelding

Engelman, Robert, en Pamela LeRoy. Sustaining Water: Population and the Future of Renewable Water Supplies. Washington: Population Action International, 1993.

MLA (8e ed.) Bronvermelding

Engelman, Robert, en Pamela LeRoy. Sustaining Water: Population and the Future of Renewable Water Supplies. Washington: Population Action International, 1993.

Let op: Deze citaties zijn niet altijd 100% accuraat.