Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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