Gaya APA

Callen, B. (2008). Perfect Phrases for Sales and Marketing Copy: Hundreds of Ready-To-Use Phrases to Capture Your Customer's Attention and Increase Your Sales . USA: McGraw-Hill Publishing Company.

Gaya MLA

Callen, Barry. "Perfect Phrases for Sales and Marketing Copy: Hundreds of Ready-To-Use Phrases to Capture Your Customer's Attention and Increase Your Sales". USA: McGraw-Hill Publishing Company, 2008. Text.