Παραπομπή APA

Dieterick , B. (1963). Urban watersupply condition and needs in seventy five devoloping countri4es (1.). World Health Organisation.

Παραπομπή Chicago Style

Dieterick , Berned. Urban Watersupply Condition and Needs in Seventy Five Devoloping Countri4es. 1. Geneva: World Health Organisation, 1963.

Παραπομπή MLA

Dieterick , Berned. Urban Watersupply Condition and Needs in Seventy Five Devoloping Countri4es. 1. World Health Organisation, 1963.