Citazione Stile APA (7a Edizione)

Kapfer, P. G., & Ovard, G. F. (1971). Preparing and using individualized learning packages for ungraded, continuous progress education. Educational Technology Pub.

Citazione stile Chigago Style (17a edizione)

Kapfer, Philip G., e Glen F. Ovard. Preparing and Using Individualized Learning Packages for Ungraded, Continuous Progress Education. Englewood Cliffs, N. J: Educational Technology Pub, 1971.

Citatione MLA (9a ed.)

Kapfer, Philip G., e Glen F. Ovard. Preparing and Using Individualized Learning Packages for Ungraded, Continuous Progress Education. Educational Technology Pub, 1971.