Παραπομπή σε μορφή APA (7η εκδ.)

Callear, D. (1994). Prolog: Programming for students : with expert systems and artificial intelligence topics. DP Publications.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Callear, David. Prolog: Programming for Students : With Expert Systems and Artificial Intelligence Topics. London: DP Publications, 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

Callear, David. Prolog: Programming for Students : With Expert Systems and Artificial Intelligence Topics. DP Publications, 1994.