Hedegaard, M., Hakkarainen, P., & Engestrom, Y. (1984). Learning and teaching on a scientific basis: Methodological and Epistemological aspects of the activity theory of learning and teaching. Psykologisk Institut.
Chicago-referens (17:e uppl.)Hedegaard, Mariane, Pentti Hakkarainen, och Yrijo Engestrom. Learning and Teaching on a Scientific Basis: Methodological and Epistemological Aspects of the Activity Theory of Learning and Teaching. Dinamarca: Psykologisk Institut, 1984.
MLA-referens (9:e uppl.)Hedegaard, Mariane, et al. Learning and Teaching on a Scientific Basis: Methodological and Epistemological Aspects of the Activity Theory of Learning and Teaching. Psykologisk Institut, 1984.
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