SpringerLink (Online service), Lester, J. C., Vicari, R. M., & Paraguacu, F. (2004). Intelligent Tutoring Systems: 7th International Conference, ITS 2004, Maceió, Alagoas, Brazil, August 30 - September 3, 2004, Proceedings (1st ed. 2004.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/b100137
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), James C. Lester, Rosa Maria Vicari, και Fábio Paraguacu. Intelligent Tutoring Systems: 7th International Conference, ITS 2004, Maceió, Alagoas, Brazil, August 30 - September 3, 2004, Proceedings. 1st ed. 2004. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2004. https://doi.org/10.1007/b100137.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Intelligent Tutoring Systems: 7th International Conference, ITS 2004, Maceió, Alagoas, Brazil, August 30 - September 3, 2004, Proceedings. 1st ed. 2004. Springer Berlin Heidelberg : Imprint: Springer, 2004. https://doi.org/10.1007/b100137.
