Lua APA (7ú heag.)
Engel. James F. (1973). Consumer behavior (2nd ed.). Holt, Rinehart.
Lua i Stíl Chicago (17ú heag.)
Engel. James F. Consumer Behavior. 2nd ed. New York: Holt, Rinehart, 1973.
Lua MLA (9ú heag.)
Engel. James F. Consumer Behavior. 2nd ed. Holt, Rinehart, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.