APA (7th ed.) Citation

Carr, H. G., & Hulme, F. E. (1961). Flags of the world ([Rev. ed.].). F. Warne.

Chicago Style (17th ed.) Citation

Carr, Harold Gresham, and F. Edward Hulme. Flags of the World. [Rev. ed.]. London, New York: F. Warne, 1961.

MLA (9th ed.) Citation

Carr, Harold Gresham, and F. Edward Hulme. Flags of the World. [Rev. ed.]. F. Warne, 1961.