Roetzer, P. (2012). The marketing agency blueprint: The handbook for building hybrid PR, SEO, content, advertising, and Web firms. Wiley.
Dyfyniad Arddull ChicagoRoetzer, Paul. The Marketing Agency Blueprint: The Handbook for Building Hybrid PR, SEO, Content, Advertising, and Web Firms. Hoboken, N.J.: Wiley, 2012.
Dyfyniad MLARoetzer, Paul. The Marketing Agency Blueprint: The Handbook for Building Hybrid PR, SEO, Content, Advertising, and Web Firms. Wiley, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.