Allen, v. c., & ravensburg, N. G. v. (1994). a beginner's business book. marburg consult for self-help promotion.
Lua i Stíl Chicago (17ú heag.)Allen, victor c., agus Nicole Goler v. ravensburg. A Beginner's Business Book. marburg: marburg consult for self-help promotion, 1994.
Lua MLA (9ú heag.)Allen, victor c., agus Nicole Goler v. ravensburg. A Beginner's Business Book. marburg consult for self-help promotion, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.