Society of Economic Geologists. (1920). Economic Geology Vol.15 Nos.1-8.
シカゴスタイル引用形Society of Economic Geologists. Economic Geology Vol.15 Nos.1-8. Economic Geology Publishing Co, 1920.
MLA引用形式Society of Economic Geologists. Economic Geology Vol.15 Nos.1-8. 1920.
警告: この引用は必ずしも正確ではありません.