"Encyclopedia". मूल से August 3, 2007 को पुरालेखित. Glossary of Library Terms. Riverside City College, Digital Library/Learning Resource Center. Retrieved on: November 17, 2007.
"Encyclopedia". मूल से August 3, 2007 को पुरालेखित. Glossary of Library Terms. Riverside City College, Digital Library/Learning Resource Center. Retrieved on: November 17, 2007.