201784 Krulik, S., & Rudnick, J. A. (1980). Problem solving: A handbook for teachers. Boston : Allyn and Bacon.
Chicago-čujuhus (17. p.)201784 Krulik, Stephen, juo Jesse A. Rudnick. Problem Solving: A Handbook for Teachers. Boston : Allyn and Bacon, 1980.
MLA-čujuhus (9. p.)201784 Krulik, Stephen, juo Jesse A. Rudnick. Problem Solving: A Handbook for Teachers. Boston : Allyn and Bacon, 1980.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.