Cita APA (7a ed.)
Langer, W. L. (1952). An encyclopedia of world history: Ancient, medieval and modern, chronologically arranged. Houghton Mifflin Co..
Cita Chicago Style (17a ed.)
Langer, William L. An Encyclopedia of World History: Ancient, Medieval and Modern, Chronologically Arranged. Boston: Houghton Mifflin Co., 1952.
Cita MLA (9a ed.)
Langer, William L. An Encyclopedia of World History: Ancient, Medieval and Modern, Chronologically Arranged. Houghton Mifflin Co., 1952.
Precaución: Estas citas no son 100% exactas.