(1992). New directions for intelligent tutoring systems: [proceedings of the NATO Advanced Research Workshop on New Directions for Intelligent Tutoring Systems, held in Sintra, Portugal, 6 - 10 October, 1990]. Springer.
Chicago-Zitierstil (17. Ausg.)New Directions for Intelligent Tutoring Systems: [proceedings of the NATO Advanced Research Workshop on New Directions for Intelligent Tutoring Systems, Held in Sintra, Portugal, 6 - 10 October, 1990]. Berlin u.a: Springer, 1992.
MLA-Zitierstil (9. Ausg.)New Directions for Intelligent Tutoring Systems: [proceedings of the NATO Advanced Research Workshop on New Directions for Intelligent Tutoring Systems, Held in Sintra, Portugal, 6 - 10 October, 1990]. Springer, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.