Society of Economic Geologists. (1925). Economic Geology Vol.20 Nos.1-8.
シカゴスタイル引用形Society of Economic Geologists. Economic Geology Vol.20 Nos.1-8. Economic Geology Publishing Co, 1925.
MLA引用形式Society of Economic Geologists. Economic Geology Vol.20 Nos.1-8. 1925.
警告: この引用は必ずしも正確ではありません.