APA (7th ed.) Citation

Cary, M., & Warmington, E. H. (1963). The ancient explorers (Rev. ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Cary, M., and E. H. Warmington. The Ancient Explorers. Rev. ed. Baltimore: Penguin Books, 1963.

MLA (9th ed.) Citation

Cary, M., and E. H. Warmington. The Ancient Explorers. Rev. ed. Penguin Books, 1963.