APA (7th ed.) Citation

Engelman, R. (1997). Why Population matters. Population Acion International.

Chicago Style (17th ed.) Citation

Engelman, Robert. Why Population Matters. Washington: Population Acion International, 1997.

MLA (9th ed.) Citation

Engelman, Robert. Why Population Matters. Population Acion International, 1997.

Warning: These citations may not always be 100% accurate.