APA (7e ed.) Bronvermelding

al, K. e. (1980). PLANNER'S GUIDE: APPROATE TECHNOLOGY FOR WATER SUPPLY AND SANITATION. World Bank.

Chicago (17e ed.) Bronvermelding

al, Kalbermatter et. PLANNER'S GUIDE: APPROATE TECHNOLOGY FOR WATER SUPPLY AND SANITATION. World Bank, 1980.

MLA (8e ed.) Bronvermelding

al, Kalbermatter et. PLANNER'S GUIDE: APPROATE TECHNOLOGY FOR WATER SUPPLY AND SANITATION. World Bank, 1980.

Let op: Deze citaties zijn niet altijd 100% accuraat.