Lua APA (7ú heag.)

Humphries, J. (1993). How to manage a sales team: A practical guide to sales leadership. Grolier International.

Lua i Stíl Chicago (17ú heag.)

Humphries, John. How to Manage a Sales Team: A Practical Guide to Sales Leadership. Hong Kong: Grolier International, 1993.

Lua MLA (9ú heag.)

Humphries, John. How to Manage a Sales Team: A Practical Guide to Sales Leadership. Grolier International, 1993.

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