Evans, J. R., & Berman, B. (1990). Marketing (4th ed.). Macmillan Pub. Co., ; Collier Macmillan Pub. Co..
Lua i Stíl Chicago (17ú heag.)Evans, Joel R., agus Barry Berman. Marketing. 4th ed. New York, N.Y. : London: Macmillan Pub. Co., ; Collier Macmillan Pub. Co., 1990.
Lua MLA (8ú heag.)Evans, Joel R., agus Barry Berman. Marketing. 4th ed. Macmillan Pub. Co., ; Collier Macmillan Pub. Co., 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.