Hellriegel, D., & Slocum, J. W. (1996). Management (7th.ed.). South-Western.

Hellriegel, Don, and John W. Slocum. Management. 7th.ed. Cincinnati: South-Western, 1996.

Hellriegel, Don, and John W. Slocum. Management. 7th.ed. South-Western, 1996.