Παραπομπή APA

Dover, D., & Dafforn, E. (2011). Search engine optimization secrets: Do what you never thought possible with SEO. Indianapolis, IN: Wiley.

Παραπομπή Chicago Style

Dover, Danny., και Erik Dafforn. Search Engine Optimization Secrets: Do What You Never Thought Possible With SEO. Indianapolis, IN: Wiley, 2011.

Παραπομπή MLA

Dover, Danny., και Erik Dafforn. Search Engine Optimization Secrets: Do What You Never Thought Possible With SEO. Indianapolis, IN: Wiley, 2011.

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