Ryan, B. A. (1983). Pit latrine ventilation: Field investigation methodology. IBRD/World Bank.
Chicago Style (17th ed.) CitationRyan, Beverley A. Pit Latrine Ventilation: Field Investigation Methodology. Washington, D.C: IBRD/World Bank, 1983.
MLA (9th ed.) CitationRyan, Beverley A. Pit Latrine Ventilation: Field Investigation Methodology. IBRD/World Bank, 1983.
Warning: These citations may not always be 100% accurate.