APA (7th ed.) Citation

Curtius, G., England, E. B., & Wilkins, S. S. (1886). Principles of Greek etymology. John Murray.

Chicago Style (17th ed.) Citation

Curtius, Georg, Edwin B. England, and Sugustus S. Wilkins. Principles of Greek Etymology. London: John Murray, 1886.

MLA (9th ed.) Citation

Curtius, Georg, et al. Principles of Greek Etymology. John Murray, 1886.