edited by Karen S. Cosby, John L. Kendall
Wolters Kluwer, 2014
Buku Teks SO
Hirko, Buff
[American Library association, American Library association], 2004
eBooks
Pyzdek, Thomas
McGraw-Hill, 2003
Buku Referensi
Pyzdek, Thomas
McGraw-Hill, 2010
Buku Teks SO
Overy, Richard
Andre Deutsch, 2014
Buku Teks SO