Practical guide to emergency ultrasound
edited by Karen S. Cosby, John L. Kendall
Wolters Kluwer, 2014
 Buku Teks
Hirko, Buff
Virtual reference training: the complete guide to providing anytime, anywhere answers
[American Library association, American Library association], 2004
 eBooks
Pyzdek, Thomas
The six sigma handbook: a complete guide for green belts, black belts, and managersat all levels
McGraw-Hill, 2010
 Buku Teks
Pyzdek, Thomas
The Six sigma handbook : a complete guide for green belts, black belts, and managers at all levels
McGraw-Hill, 2003
 Buku Referensi
Hock, Randolph
The extreme searcher's internet handbook: a guide for the serious searcher
Cyber Age Books, 2004
 Buku Teks