APA (7th ed.) Citation

Langer, W. L. (1977). European alliances and alignments, 1871-1890. Greenwood Press.

Chicago Style (17th ed.) Citation

Langer, William L. European Alliances and Alignments, 1871-1890. Westport, Conn.: Greenwood Press, 1977.

MLA (8th ed.) Citation

Langer, William L. European Alliances and Alignments, 1871-1890. Greenwood Press, 1977.

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