Lorange, P. (1980). Corporate planning: An executive viewpoint. Prentice-Hall.
Dyfyniad Arddull ChicagoLorange, Peter. Corporate Planning: An Executive Viewpoint. Englewood Cliffs, N.J.: Prentice-Hall, 1980.
Dyfyniad MLALorange, Peter. Corporate Planning: An Executive Viewpoint. Prentice-Hall, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.