Παραπομπή APA
Ringland, G. A., & Duce, D. A. (1988). Approaches to knowledge representation: An introduction. Letchworth: Research studies press.
Παραπομπή Chicago StyleRingland, Gordon A., and David A. Duce. Approaches to Knowledge Representation: An Introduction. Letchworth: Research studies press, 1988.
Παραπομπή MLARingland, Gordon A., and David A. Duce. Approaches to Knowledge Representation: An Introduction. Letchworth: Research studies press, 1988.
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