Citazione Stile APA (7a Edizione)

Keller, A. (1987). When machines teach: Designing computer courseware. Harper & Row.

Citazione stile Chigago Style (17a edizione)

Keller, Arnold. When Machines Teach: Designing Computer Courseware. New York: Harper & Row, 1987.

Citatione MLA (9a ed.)

Keller, Arnold. When Machines Teach: Designing Computer Courseware. Harper & Row, 1987.