ebrary, Inc, Engestrom, Y., & Kerosuo, H. (2007). Activity theory and workplace learning. Emerald Group Publishing.
Chicago Style (17th ed.) Zitazioaebrary, Inc, Yrjo Engestrom, eta Hannele Kerosuo. Activity Theory and Workplace Learning. Bradford, England: Emerald Group Publishing, 2007.
MLA (9th ed.) Zitazioaebrary, Inc, et al. Activity Theory and Workplace Learning. Emerald Group Publishing, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.