FENTON JOHN. (1979). A-Z OF SALES MANAGEMENT. HEINEMANN.
Chicago Style aipamenaFENTON JOHN. A-Z OF SALES MANAGEMENT. LONDON: HEINEMANN, 1979.
MLA aipamenaFENTON JOHN. A-Z OF SALES MANAGEMENT. HEINEMANN, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.