Lewis, R. (1996). Intermediate retail & distributionRoger Lewis, Roger Trevitt. Hodder&Stoughton.
Lua i Stíl Chicago (17ú heag.)Lewis, Roger. Intermediate Retail & DistributionRoger Lewis, Roger Trevitt. Hodder&Stoughton, 1996.
Lua MLA (8ú heag.)Lewis, Roger. Intermediate Retail & DistributionRoger Lewis, Roger Trevitt. Hodder&Stoughton, 1996.
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