Pettinger, Richard, author
Capstone Publishing, 2002
Buku Teks
Kim, Suk H, author
Blackwell Publishing, 2006
Buku Teks
Davidson, William H., author
John Wiley & Sons, 1982
Buku Teks
Vernon-Wortzel, Heidi, author
John Wiley & Sons, 1991
Buku Teks
Fitzgerald, Robert, 1959-, author
Cambridge University Press, 2015
Buku Teks