Doores, J., Reiblein, A. R., & Vandera, S. (1987). Prolog: Programming for tomorrow. Sigma Press.
Lua i Stíl Chicago (17ú heag.)Doores, J., A. R. Reiblein, agus S. Vandera. Prolog: Programming for Tomorrow. Wilmslow, Cheshire: Sigma Press, 1987.
Lua MLA (8ú heag.)Doores, J., et al. Prolog: Programming for Tomorrow. Sigma Press, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.