APA (7th ed.) Citation

Colquhoun, A. R., & Colquhoun, E. (1907). Whirlpool of Europe: Austria-Hungary and the Habsburgs : maps, diagrams, and illust.

Chicago Style (17th ed.) Citation

Colquhoun, Archibald R., and Ethel Colquhoun. Whirlpool of Europe: Austria-Hungary and the Habsburgs : Maps, Diagrams, and Illust. London, 1907.

MLA (8th ed.) Citation

Colquhoun, Archibald R., and Ethel Colquhoun. Whirlpool of Europe: Austria-Hungary and the Habsburgs : Maps, Diagrams, and Illust. 1907.

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