Quadagno, Jill S., author
McGraw-Hill, 2002
Buku Teks
Siegel, Jacob S., author
Springer, 2012
eBooks
Touhy, Theris A., author
Missouri Elsevier & Mosby, 2014
Buku Teks
McGraw-Hill, 2014
Buku Teks
Alan Walker, Liam Foster, editors
Elgar Research Colection, 2014
Buku Teks