Lua APA (7ú heag.)

Perreault, W. D. (1997). Essentials of marketing: A global-managerial approach (7th.ed.). Irwin.

Lua i Stíl Chicago (17ú heag.)

Perreault, William D. Essentials of Marketing: A Global-managerial Approach. 7th.ed. Chicago: Irwin, 1997.

Lua MLA (9ú heag.)

Perreault, William D. Essentials of Marketing: A Global-managerial Approach. 7th.ed. Irwin, 1997.

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