Cita APA (7th ed.)

Ptak, C. A., Smith, C., & Orlicky, J. (2011). Orlicky's material requirements planning (Third edition.). McGraw-Hill.

Cita Chicago (17th ed.)

Ptak, Carol A., Chad Smith, i Joseph Orlicky. Orlicky's Material Requirements Planning. Third edition. New York: McGraw-Hill, 2011.

Cita MLA (9th ed.)

Ptak, Carol A., et al. Orlicky's Material Requirements Planning. Third edition. McGraw-Hill, 2011.