APA (7th ed.) Citation

Wertsch, J. V. (1981). The Concept of activity in Soviet psychology. M.E. Sharpe.

Chicago Style (17th ed.) Citation

Wertsch, James V. The Concept of Activity in Soviet Psychology. Armonk, N.Y.: M.E. Sharpe, 1981.

MLA (9th ed.) Citation

Wertsch, James V. The Concept of Activity in Soviet Psychology. M.E. Sharpe, 1981.