DALRYMPLE, D. J. (1982). Sales Management Concepts And Cases Douglas J. Dalrymple. John Wiley and Sons.
Lua i Stíl Chicago (17ú heag.)DALRYMPLE, Douglas J. Sales Management Concepts And Cases Douglas J. Dalrymple. John Wiley and Sons, 1982.
Lua MLA (8ú heag.)DALRYMPLE, Douglas J. Sales Management Concepts And Cases Douglas J. Dalrymple. John Wiley and Sons, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.