Miller, R. (1982). Conceptual Selling. Warniv.
Lua i Stíl Chicago (17ú heag.)Miller, R.B. Conceptual Selling. New York: Warniv, 1982.
Lua MLA (9ú heag.)Miller, R.B. Conceptual Selling. Warniv, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.