Young, James O.
Blackwell Publishing, 2008
Buku Teks
Young, James O.
Wiley-Blackwell Pub., 2010
Buku Teks
The University of exeter for AmCAS, 1986
Buku Teks
The Korean Foundation, 1996,
Buku Referensi
Nicholson, Robert
Robert Nicholson Pub., 1988
Buku Referensi