APA (7th ed.) Citation

Callendar, G. S., Egerton, A. C., & Callendar, H. L. (1944). The 1939 Callendar steam tables (2nd ed.). Arnold.

Chicago Style (17th ed.) Citation

Callendar, G. S., Alfred Charles Egerton, and Hugh L. Callendar. The 1939 Callendar Steam Tables. 2nd ed. London: Arnold, 1944.

MLA (8th ed.) Citation

Callendar, G. S., et al. The 1939 Callendar Steam Tables. 2nd ed. Arnold, 1944.