ENGEL, J. F. (1990). Consumer Behavior / James F. Engel; Roger D. Blackwell And Paul W. Miniard. The Dryden.
Lua i Stíl Chicago (17ú heag.)ENGEL, James F. Consumer Behavior / James F. Engel; Roger D. Blackwell And Paul W. Miniard. The Dryden, 1990.
Lua MLA (8ú heag.)ENGEL, James F. Consumer Behavior / James F. Engel; Roger D. Blackwell And Paul W. Miniard. The Dryden, 1990.
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