Plakitsi, K. (2013). Activity theory in formal and informal science education. Sense.
Chicago Style (17th ed.) ZitazioaPlakitsi, Katerina. Activity Theory in Formal and Informal Science Education. Rotterdam: Sense, 2013.
MLA (9th ed.) ZitazioaPlakitsi, Katerina. Activity Theory in Formal and Informal Science Education. Sense, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.