APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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