Citazione Stile APA (7a Edizione)

Todd, R. J., & Cawthron, E. R. (1977). The simple system, a novel approach to teaching: Self-instructional programmed-learning using microfiche. Dept. of Further Education, Kilkenny College of Further Education.

Citazione stile Chigago Style (17a edizione)

Todd, R. J., e E. R. Cawthron. The Simple System, a Novel Approach to Teaching: Self-instructional Programmed-learning Using Microfiche. [Adelaide]: Dept. of Further Education, Kilkenny College of Further Education, 1977.

Citatione MLA (8a ed.)

Todd, R. J., e E. R. Cawthron. The Simple System, a Novel Approach to Teaching: Self-instructional Programmed-learning Using Microfiche. Dept. of Further Education, Kilkenny College of Further Education, 1977.