Hani Kusumaningsih
Evaluasi layanan referensi e-mail Perpustakaan United Nations Information Centre Jakarta = Evaluation of e-mail reference at United Nations Information Centre Library Jakarta
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2016
 UI - Skripsi Membership
Kern, M. Kathleen
Virtual reference best practices: tailoring services to your library
American Management Association, 2009
 eBooks
Ronan, Jana Smith
Chat reference : a guide to live virtual reference services
Libraries Unlimited, 2003
 Buku Referensi
Cassell, Kay Ann
Reference and information services : an introduction
Neal-Schuman, an imprint of the American Library Association, 2013
 Buku Teks SO
Ronan, Jana Smith
Chat reference: a guide to live virtual reference services
Libraries Unlimited, 2003
 Buku Teks SO