APA (7th ed.) Citation

Cochran, W. G., Moses, L. E., & Mosteller, F. (1983). Planning and analysis of observational studies.

Chicago Style (17th ed.) Citation

Cochran, William Gemmell, Lincoln E. Moses, and Frederick Mosteller. Planning and Analysis of Observational Studies. 1983.

MLA (9th ed.) Citation

Cochran, William Gemmell, et al. Planning and Analysis of Observational Studies. 1983.