DALRYMPLE, D. J. (1995). Sales Management Concepts And Cases Douglas J. Dalrymple, William L. Cron. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)DALRYMPLE, Douglas J. Sales Management Concepts And Cases Douglas J. Dalrymple, William L. Cron. John Wiley & Sons, 1995.
Lua MLA (8ú heag.)DALRYMPLE, Douglas J. Sales Management Concepts And Cases Douglas J. Dalrymple, William L. Cron. John Wiley & Sons, 1995.
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