Gup, B. E. (1980). Guide to strategic planning. McGraw-Hill.
Chicago-čujuhus (17. p.)Gup, Benton E. Guide to Strategic Planning. New York: McGraw-Hill, 1980.
MLA-čujuhus (9. p.)Gup, Benton E. Guide to Strategic Planning. McGraw-Hill, 1980.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.