Hart, L. B. (1991). Training methods that work: 17 tried and tested training methods. London : Kogan page.
Cita Chicago (17th ed.)Hart, Lois B. Training Methods That Work: 17 Tried and Tested Training Methods. London : Kogan page, 1991.
Cita MLA (9th ed.)Hart, Lois B. Training Methods That Work: 17 Tried and Tested Training Methods. London : Kogan page, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.