APA (7th ed.) Citation

Butz, W. P. (1981). Why collect retrospective data? Rand Corp..

Chicago Style (17th ed.) Citation

Butz, William P. Why Collect Retrospective Data? Santa Monica, Calif.: Rand Corp., 1981.

MLA (9th ed.) Citation

Butz, William P. Why Collect Retrospective Data? Rand Corp., 1981.