edited by Peter C. Smith, Laura Ginnelly and Mark Sculpher
Open University Press, 2005
Buku Teks
edited by Peter A. Berman
Harvard University Press, 1995
Buku Teks
edited by Ronald Bayer [and others]
Oxford University Press, 2007
Buku Teks
edited by Kathleen Kelly
Mosby, 1994
Buku Teks
James A. Johnson, Carleen H. Stoskopf
Jones and Bartlett Publishers, 2010
Buku Teks