Riggs, Fred W., author
East-West Center Press , 1967
Buku Teks
Orum, Anthony M., author
Blackwell, 2003
Buku Teks
Guardiola-Rivera, Oscar, author
Birkbeck Law Press, 2009
Buku Teks
Palen, J. John, author
McGraw-Hill, 1992
Buku Teks
Palen, J. John, author
McGraw-Hill, 1981
Buku Teks