APA (7th ed.) Zitazioa
Blunden, A. (2010). An interdisciplinary theory of activity. Brill.
Chicago Style (17th ed.) Zitazioa
Blunden, Andy. An Interdisciplinary Theory of Activity. Leiden ; Boston: Brill, 2010.
MLA (9th ed.) Zitazioa
Blunden, Andy. An Interdisciplinary Theory of Activity. Brill, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.