APA (7th ed.) Citation

Langsam, W. C. (1963). World history since 1870. American Book Company.

Chicago Style (17th ed.) Citation

Langsam, Walter Consuelo. World History Since 1870. American Book Company, 1963.

MLA (8th ed.) Citation

Langsam, Walter Consuelo. World History Since 1870. American Book Company, 1963.

Warning: These citations may not always be 100% accurate.