Harmon, C., & Messina, M. (2013). Customer service in libraries: Best practices. The Scarecrow Press.
Lua i Stíl Chicago (17ú heag.)Harmon, Charles, agus Michael Messina. Customer Service in Libraries: Best Practices. Lanham: The Scarecrow Press, 2013.
Lua MLA (8ú heag.)Harmon, Charles, agus Michael Messina. Customer Service in Libraries: Best Practices. The Scarecrow Press, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.