Costello, C., & Sharma, M. (2012). Elgg 1.8 social networking: Create, customize, and deploy your very own social networking site with Elgg (2nd ed.). Packt Pub..
Lua i Stíl Chicago (17ú heag.)Costello, Cash, agus Mayank Sharma. Elgg 1.8 Social Networking: Create, Customize, and Deploy Your Very Own Social Networking Site with Elgg. 2nd ed. Birmingham, U.K.: Packt Pub., 2012.
Lua MLA (9ú heag.)Costello, Cash, agus Mayank Sharma. Elgg 1.8 Social Networking: Create, Customize, and Deploy Your Very Own Social Networking Site with Elgg. 2nd ed. Packt Pub., 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.