MacKenzie, Raewyn
Sheldon Press , 1985
Buku Teks
French, F. G.
Oxford University Press, 1947
Buku Teks
Clinard, Marshall B. (Marshall Barron)
The Tree Press, 1966
Buku Teks
Kurtz, Linda Farris
Sage Publications, 1997
Buku Teks
Kidman, Antony
Biochemical & General Services, 1995
Buku Teks