Palmore, James A.
East West Center Press, 1987
Buku Teks
Moche, Dinah L.
John Wiley & Sons, 1981
Buku Teks
Kuhn, Karl F.
John Wiley & Sons, 1979
Buku Teks
Craghan, Michael
John Wiley & Sons, 2003
Buku Teks
Tagliaferri, Louis E.
John Wiley & Sons, 1979
Buku Teks