Cita APA

Heinritz, S. F., Farrell, P. V., & Smith, C. L. (1991). Purchasing: Principles and applications (8th ed.). Prentice-Hall.

Citación estilo Chicago

Heinritz, Stuart F., Paul V. Farrell, and Clifton L. Smith. Purchasing: Principles and Applications. 8th ed. Englwood Cliffs, N.J: Prentice-Hall, 1991.

Cita MLA

Heinritz, Stuart F., et al. Purchasing: Principles and Applications. 8th ed. Prentice-Hall, 1991.