APA (7e ed.) Bronvermelding

Não informado. (1973). Sage urban studies abstracts. Sage Publications.

Chicago (17e ed.) Bronvermelding

Não informado. Sage Urban Studies Abstracts. Beverly Hills, Calif: Sage Publications, 1973.

MLA (8e ed.) Bronvermelding

Não informado. Sage Urban Studies Abstracts. Sage Publications, 1973.

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