Cita APA (7th ed.)
Barry P. Goettl, H. M. H. Intelligent Tutoring Systems: 4th International Conference, ITS .98, San Antonio, Texas, USA, August 16.19, 1998, Proceedings. Springer.
Cita Chicago (17th ed.)
Barry P. Goettl, Henry M. Halff. Intelligent Tutoring Systems: 4th International Conference, ITS .98, San Antonio, Texas, USA, August 16.19, 1998, Proceedings. Berlín, Alemania: Springer.
Cita MLA (9th ed.)
Barry P. Goettl, Henry M. Halff. Intelligent Tutoring Systems: 4th International Conference, ITS .98, San Antonio, Texas, USA, August 16.19, 1998, Proceedings. Springer.
Atenció: Aquestes cites poden no estar 100% correctes.