Leavitt, H. J. (1964). Managerial psychology: An introduction to individual, pairs, and groups in organisations (2nd ed.). University of chicago.

Leavitt, Harold J. Managerial Psychology: An Introduction to Individual, Pairs, and Groups in Organisations. 2nd ed. Chicago: University of chicago, 1964.

Leavitt, Harold J. Managerial Psychology: An Introduction to Individual, Pairs, and Groups in Organisations. 2nd ed. University of chicago, 1964.