APA (7e ed.) Bronvermelding

Não informado. (1970). Current sweden: Environment planning and conservation. Swedish Institute.

Chicago (17e ed.) Bronvermelding

Não informado. Current Sweden: Environment Planning and Conservation. Stockholm: Swedish Institute, 1970.

MLA (8e ed.) Bronvermelding

Não informado. Current Sweden: Environment Planning and Conservation. Swedish Institute, 1970.

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