APA-viite (7. p.)

(1967). The proceedings of the Programmed Learning Conference held at Loughborough, 15-18 April 1966 / edited by Derick Unwin and John Leedham.

Chicago-viite (17. p.)

The Proceedings of the Programmed Learning Conference Held at Loughborough, 15-18 April 1966 / Edited by Derick Unwin and John Leedham. 1967.

MLA-viite (9. p.)

The Proceedings of the Programmed Learning Conference Held at Loughborough, 15-18 April 1966 / Edited by Derick Unwin and John Leedham. 1967.