Labarthe, Darwin R., author
Jones and Bartlett Publishers, 2011
Buku Teks
Labarthe, Darwin R., author
Jones & Bartlett Publishers, 2008
Buku Teks
Krickeberg, Klaus, author
Springer, 2012
eBooks
Harris, Randall E., author
MA Jones & Bartlett Learning, 2016
Buku Teks SO
United Nations Departemen of Public Information, 1990
Buku Teks