Cita APA (7a ed.)

Hughes, J. L. (1962). Programed instruction for schools and industry. Science Research Associates.

Cita Chicago Style (17a ed.)

Hughes, John Leo. Programed Instruction for Schools and Industry. Chicago: Science Research Associates, 1962.

Cita MLA (9a ed.)

Hughes, John Leo. Programed Instruction for Schools and Industry. Science Research Associates, 1962.