Cita APA (7a ed.)
Heinritz, S. F., Farrell, P. V., & Smith, C. L. (1986). Purchasing: Principles and applications (7th ed.). Prentice-Hall.
Cita Chicago Style (17a ed.)
Heinritz, Stuart F., Paul V. Farrell, y Clifton L. Smith. Purchasing: Principles and Applications. 7th ed. Englwood Cliffs, N.J.: Prentice-Hall, 1986.
Cita MLA (9a ed.)
Heinritz, Stuart F., et al. Purchasing: Principles and Applications. 7th ed. Prentice-Hall, 1986.
Precaución: Estas citas no son 100% exactas.