ebrary, Inc, Engestrom, Y., & Kerosuo, H. (2007). Activity theory and workplace learning. Emerald Group Publishing.
Chicago-čujuhus (17. p.)ebrary, Inc, Yrjo Engestrom, juo Hannele Kerosuo. Activity Theory and Workplace Learning. Bradford, England: Emerald Group Publishing, 2007.
MLA-čujuhus (9. p.)ebrary, Inc, et al. Activity Theory and Workplace Learning. Emerald Group Publishing, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.