APA(7版)引用形式

Não informado. (1975). Natural Resources and Development. Bundesanstalt fur Geowissenschaften und Rohstoffe.

Chicagoスタイル(17版)引用形式

Não informado. Natural Resources and Development. Hannover, Alemanha: Bundesanstalt fur Geowissenschaften und Rohstoffe, 1975.

MLA(8版)引用形式

Não informado. Natural Resources and Development. Bundesanstalt fur Geowissenschaften und Rohstoffe, 1975.

警告: この引用は必ずしも正確ではありません.