SCHIFFMAN, L. G. (2007). Consumer Behavior ed.9Leon G. Schiffman and Leslie Lazar Kanuk. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)SCHIFFMAN, Leon G. Consumer Behavior Ed.9Leon G. Schiffman and Leslie Lazar Kanuk. Prentice Hall, 2007.
Lua MLA (8ú heag.)SCHIFFMAN, Leon G. Consumer Behavior Ed.9Leon G. Schiffman and Leslie Lazar Kanuk. Prentice Hall, 2007.
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