Lee; Seda. Search Engine Advertising: Buying Your Way to the Top to Increase Sales (2.). Pearson India.
Čikaški stil citiranja (17. izdanje)Lee; Seda. Search Engine Advertising: Buying Your Way to the Top to Increase Sales. 2. Pearson India.
MLA način citiranja (8. izdanje)Lee; Seda. Search Engine Advertising: Buying Your Way to the Top to Increase Sales. 2. Pearson India.
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