Ittner, P. L. (1997). Train-the-trainer: Coursebook (2nd.ed.). HRD.
Chicago-čujuhus (17. p.)Ittner, Penny L. Train-the-trainer: Coursebook. 2nd.ed. Amherst: HRD, 1997.
MLA-čujuhus (9. p.)Ittner, Penny L. Train-the-trainer: Coursebook. 2nd.ed. HRD, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.