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 dan Budaya Universitas Indonesia, 2016
 UI - Skripsi Membership
Kovacs, Diane K.
The virtual reference handbook : interview and information delivery techniques for the chat and e-mail environments / Diane K. Kovacs
Facet Publishing, 2007
 Buku Referensi
McMenemy, David
Delivering digital services : a handbook for public libraries and learning centres
Facet, 2006
 Buku Referensi
Karmidi Martoatmodjo
Pendidikan Perpustakaan Di Tujuh Negara Asia
1996
 UI - Laporan Penelitian
Providing customer-oriented services in academic libraries
by Chris Pinder ; editor, Maxine Melling
Library Association; with SCONUL, 1996
 Buku Teks