Lua APA (7ú heag.)
Helmstetter, G. (1997). Increasing hits and selling more on your Web site. Wiley Computer Pub..
Lua i Stíl Chicago (17ú heag.)
Helmstetter, Greg. Increasing Hits and Selling More on Your Web Site. New York: Wiley Computer Pub., 1997.
Lua MLA (9ú heag.)
Helmstetter, Greg. Increasing Hits and Selling More on Your Web Site. Wiley Computer Pub., 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.