edited by Josep Figueras, Martin McKee
McGraw-Hill, 2012
Buku Teks
Collins, Charles, author
Oxford University Press, 1994
Buku Teks
James A. Johnson, Carleen H. Stoskopf
Jones and Bartlett Publishers, 2010
Buku Teks
Blum, Hendrik L.
Thirth Party, 1983
Buku Teks
edited by Harriet H. Werley
Springer, 1976
Buku Teks