Gaya APA

Swanson, C, P., Luckhardt, I, B, H, I, P, J, W, I, Ã, R, C. (NULL). Intelligent tutoring systems evalutions in design . New: New Jersey: Lawrence Erlbaum Associates; 1991.

Gaya MLA

Swanson, Carl, P.., Luckhardt, I., Burns,, Hugh, II., Parlett,, James, W, III., ì, Redfield,, Carol. "Intelligent tutoring systems evalutions in design". New: New Jersey: Lawrence Erlbaum Associates; 1991, NULL. Text.