Shetter, William Z., author
Martinus Nijhoff, 1988
Buku Teks
Ryan, Michael, author
Blackwell, 2007
Buku Teks
Plummer, David T., author
MacGraw-Hill, 1987
Buku Teks
Giles, Judy, author
Blacwell Publisher, 2008
Buku Teks
Ryan, Michael, 1951-, author
Wiley-Blackwell, 2017
Buku Teks