Langer, W. L. (1948). Encyclopedia of world history, ancient, medieval and modern, chronologically arranged (Rev. ed.). Harrap.
Chicago Style (17th ed.) CitationLanger, William L. Encyclopedia of World History, Ancient, Medieval and Modern, Chronologically Arranged. Rev. ed. Lond.: Harrap, 1948.
MLA (8th ed.) CitationLanger, William L. Encyclopedia of World History, Ancient, Medieval and Modern, Chronologically Arranged. Rev. ed. Harrap, 1948.
Warning: These citations may not always be 100% accurate.