Cohen, Nahoum
McGraw-Hill, 2001
Buku Teks SO
Balloffet, Nelly
[American Library association, ], 2005
eBooks
Gina Dharmestiningsih
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2016
UI - Skripsi Membership
Buku Teks
edited by F. Lance Craigead, Charles L. Convis Jr
Esri Press, 2013
Buku Teks