APA (7th ed.) Citation

Clocksin, W. F., & Mellish, C. S. (1981). Programming in Prolog. Springer.

Chicago Style (17th ed.) Citation

Clocksin, William F., and C. S. Mellish. Programming in Prolog. Berlin [etc.]: Springer, 1981.

MLA (9th ed.) Citation

Clocksin, William F., and C. S. Mellish. Programming in Prolog. Springer, 1981.