APA (7th ed.) Citation

Gammill, R. C. (1973). An examination of tic-tac-toe like games. Rand Corp..

Chicago Style (17th ed.) Citation

Gammill, Robert C. An Examination of Tic-tac-toe like Games. Santa Monica, Ca: Rand Corp., 1973.

MLA (9th ed.) Citation

Gammill, Robert C. An Examination of Tic-tac-toe like Games. Rand Corp., 1973.