Cita APA (7a ed.)

(1981). Drinking-water and sanitation: 1981-1990 : a way to health.

Cita Chicago Style (17a ed.)

Drinking-water and Sanitation: 1981-1990 : A Way to Health. 1981.

Cita MLA (8a ed.)

Drinking-water and Sanitation: 1981-1990 : A Way to Health. 1981.

Precaución: Estas citas no son 100% exactas.