Kummel, B. (1961). History of the earth: :introduction to histrocal geology. Eurasia publishing.
シカゴスタイル引用形Kummel, Bernhard. History of the Earth: :introduction to Histrocal Geology. New delhi: Eurasia publishing, 1961.
MLA引用形式Kummel, Bernhard. History of the Earth: :introduction to Histrocal Geology. Eurasia publishing, 1961.
警告: この引用は必ずしも正確ではありません.