Cita APA (7th ed.)

ebrary, Inc, Engestrom, Y., & Kerosuo, H. (2007). Activity theory and workplace learning. Emerald Group Publishing.

Cita Chicago (17th ed.)

ebrary, Inc, Yrjo Engestrom, i Hannele Kerosuo. Activity Theory and Workplace Learning. Bradford, England: Emerald Group Publishing, 2007.

Cita MLA (9th ed.)

ebrary, Inc, et al. Activity Theory and Workplace Learning. Emerald Group Publishing, 2007.