Ridley, Damon D.
John Wiley & Sons, 1996
Buku Teks SO
Bell, Suzanne S.
Libraries Unlimited, 2015
Buku Teks SO
Chowdhury, G.G.
Library Association, 2001
Buku Teks SO
Mary, Leena
Springer Cham, 2019
eBooks
Tenopir, Carol
Libraries Unlimited, 1989
Buku Teks SO