Cole, V., Gaskin, R. F., & Sim, R. J. (1993). Perspectives: On leadership training. NEGST.
Chicago-čujuhus (17. p.)Cole, V.B, R. F. Gaskin, juo R. J. Sim. Perspectives: On Leadership Training. Nairobi: NEGST, 1993.
MLA-čujuhus (9. p.)Cole, V.B, et al. Perspectives: On Leadership Training. NEGST, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.