Cita APA (7a ed.)
Ross, J. M. (1990). Puzzles as heuristic programming exercises. Simulation & Gaming, 21, 190-198.
Cita Chicago Style (17a ed.)
Ross, John Minor. "Puzzles as Heuristic Programming Exercises." Simulation & Gaming 21 (1990): 190-198.
Cita MLA (9a ed.)
Ross, John Minor. "Puzzles as Heuristic Programming Exercises." Simulation & Gaming, vol. 21, 1990, pp. 190-198.
Precaución: Estas citas no son 100% exactas.