Rapp, S. (1989). Maximarketing. Mc Graw Hill.
Lua i Stíl Chicago (17ú heag.)Rapp, Stan. Maximarketing. Mc Graw Hill, 1989.
Lua MLA (9ú heag.)Rapp, Stan. Maximarketing. Mc Graw Hill, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.