Não informado. (1970). Current sweden: Environment planning and conservation. Swedish Institute.
Chicagoスタイル(17版)引用形式Não informado. Current Sweden: Environment Planning and Conservation. Stockholm: Swedish Institute, 1970.
MLA(8版)引用形式Não informado. Current Sweden: Environment Planning and Conservation. Swedish Institute, 1970.
警告: この引用は必ずしも正確ではありません.