APA (7th ed.) Citation

Ennals, J. R. (1984). Beginning micro-PROLOG (2nd rev. ed.). Harper & Row Pub..

Chicago Style (17th ed.) Citation

Ennals, J. R. Beginning Micro-PROLOG. 2nd rev. ed. New York: Harper & Row Pub., 1984.

MLA (8th ed.) Citation

Ennals, J. R. Beginning Micro-PROLOG. 2nd rev. ed. Harper & Row Pub., 1984.