APA (7. basım) Alıntı

Okun, D. A., & Ernst, W. R. (1987). Community piped water supply systems in developing countries: A planning manual. World Bank.

Chicago Style (17. basım) Atıf

Okun, Daniel Alexander, ve Walter R. Ernst. Community Piped Water Supply Systems in Developing Countries: A Planning Manual. Washington, D.C: World Bank, 1987.

MLA (9th ed.) Atıf

Okun, Daniel Alexander, ve Walter R. Ernst. Community Piped Water Supply Systems in Developing Countries: A Planning Manual. World Bank, 1987.