(1914). Coal age. McGraw-Hill.
Chicago Style (17th ed.) CitationCoal Age. New York: McGraw-Hill, 1914.
MLA引文Coal Age. McGraw-Hill, 1914.
警告：這些引文格式不一定是100％准確.
APA引文
(1914). Coal age. McGraw-Hill.
Chicago Style (17th ed.) CitationCoal Age. New York: McGraw-Hill, 1914.
MLA引文Coal Age. McGraw-Hill, 1914.