Cita APA

Ryan, B. A. (1983). Ventilated improved pit latrines: Vent pipe design guidelines. IBRD/World Bank.

Citación estilo Chicago

Ryan, Beverley A. Ventilated Improved Pit Latrines: Vent Pipe Design Guidelines. Washington, D.C: IBRD/World Bank, 1983.

Cita MLA

Ryan, Beverley A. Ventilated Improved Pit Latrines: Vent Pipe Design Guidelines. IBRD/World Bank, 1983.

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