Plossl, G. (1995). Orlicky`s material requirements planning (2nd.). Mc graw hill.
Cita Chicago (17th ed.)Plossl, George. Orlicky`s Material Requirements Planning. 2nd. New york: Mc graw hill, 1995.
Cita MLA (9th ed.)Plossl, George. Orlicky`s Material Requirements Planning. 2nd. Mc graw hill, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.