Gaya APA
Langer, William L.. (1972).
An Encyclopedia Of World History (IV. The Early Modern Period - V. The Modern Period) .
Boston:
Houghton Mifflin Company.
Gaya Chicago
Langer, William L..
An Encyclopedia Of World History (IV. The Early Modern Period - V. The Modern Period).
Boston:
Houghton Mifflin Company,
1972.
Text.
Gaya MLA
Langer, William L..
An Encyclopedia Of World History (IV. The Early Modern Period - V. The Modern Period).
Boston:
Houghton Mifflin Company,
1972.
Text.
Gaya Turabian
Langer, William L..
An Encyclopedia Of World History (IV. The Early Modern Period - V. The Modern Period).
Boston:
Houghton Mifflin Company,
1972.
Print.