Lorange, P. (1980). Corporate planning: An executive viewpoint. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Lorange, Peter. Corporate Planning: An Executive Viewpoint. Englewood Cliffs, N.J.: Prentice-Hall, 1980.
Lua MLA (9ú heag.)Lorange, Peter. Corporate Planning: An Executive Viewpoint. Prentice-Hall, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.