Alexander, Linda Lewis
Jones & Bartlett Learning, 2014
Buku Teks SO
Thorsons, 2000
Buku Teks SO
edited by Cath Rogers-Clark
Maclennan + Petty , 1998
Buku Teks SO
edited by Brenna H. Mayer
Lippincott/Willims & Wilkins, 2005
Buku Teks SO
Saltman, Deborah
Harcourt Brace Jovanovich, 1991
Buku Teks SO