Cita APA (7a ed.)

Kay, H., Dodd, B., & Sime, M. E. (1969). Teaching machines and programmed instruction. Penguin.

Cita Chicago Style (17a ed.)

Kay, Harry, Bernard Dodd, y M. E. Sime. Teaching Machines and Programmed Instruction. Harmondsworth: Penguin, 1969.

Cita MLA (9a ed.)

Kay, Harry, et al. Teaching Machines and Programmed Instruction. Penguin, 1969.