Blackwell Scientific , [date of publication not identified]
Buku Teks
Jaco, E. Gartly
Free Press, 1972
Buku Teks
Radley, Alan
Thousand Oaks Sage , 1994
Buku Teks
Bolen, Jean Shinoda
Scribner , 1996
Buku Teks
Barry, Patricia D.
J.B. Lippincott, 1996
Buku Teks