Ferrell, R. W. (1964). Customer-oriented planning. D.B Taraporevala sons &co.
Chicago Edition CitationFerrell, Robert W. Customer-oriented Planning. BombayU.S.A: D.B Taraporevala sons &co, 1964.
Cita MLAFerrell, Robert W. Customer-oriented Planning. D.B Taraporevala sons &co, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.