Παραπομπή APA

Ernst, G., & Newell, A. (1969). GPS: A case study in generality and problem solving. New York: Academic Press.

Παραπομπή Chicago Style

Ernst, George., and Allen Newell. GPS: A Case Study in Generality and Problem Solving. New York: Academic Press, 1969.

Παραπομπή MLA

Ernst, George., and Allen Newell. GPS: A Case Study in Generality and Problem Solving. New York: Academic Press, 1969.

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