Hicks, H. G., & Gullett, C. R. (1981). Management (4th ed.). McGraw-Hill.

Hicks, Herbert G., and C. Ray Gullett. Management. 4th ed. New York: McGraw-Hill, 1981.

Hicks, Herbert G., and C. Ray Gullett. Management. 4th ed. McGraw-Hill, 1981.