Franklin

MLA

Hartley, James, and Igor Kevin Davies. Contributions to an Educational Technology. New York: Crane, Russak, 1972.

APA

Hartley, J., & Davies, I. Kevin. (1972). Contributions to an educational technology. New York: Crane, Russak.

Chicago

Hartley, James, and Igor Kevin Davies. Contributions to an Educational Technology. New York,: Crane, Russak, 1972.