Holden, K., author
Cambridge University Press, 1990
Buku Teks
Heimann, Eduard
Oxford University Press, 1959
Buku Teks
Kobelt, Gisela, author
Office of Health Economics, 2002
Buku Teks
Arndt, Nicholas, author
Springer, 2012
eBooks
Mackinnon, Danny, author
Pearson, Prentice Hall, 2007
Buku Teks