Zimmer, A. (1966). The strategy of successful retail salesmanship. Mc Graw Hill.
Lua i Stíl Chicago (17ú heag.)Zimmer, Allen. The Strategy of Successful Retail Salesmanship. New York: Mc Graw Hill, 1966.
Lua MLA (9ú heag.)Zimmer, Allen. The Strategy of Successful Retail Salesmanship. Mc Graw Hill, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.