Wiley , 1990
Buku Teks
edited by A.C.P. Sims and W.I. Hume
Blackwell, [Date of publication not identified]
Buku Teks
Jaco, E. Gartly
Free Press, 1972
Buku Teks
Radley, Alan
Thousand Oaks Sage , 1994
Buku Teks SO
Bolen, Jean Shinoda
Scribner , 1996
Buku Teks