Schall, L. D., & Haley, C. W. (1991). Introduction to financial management (6th ed.). McGraw-Hill.

Schall, Lawrence D., and Charles W. Haley. Introduction to Financial Management. 6th ed. New York: McGraw-Hill, 1991.

Schall, Lawrence D., and Charles W. Haley. Introduction to Financial Management. 6th ed. McGraw-Hill, 1991.