Harris, Marvin, 1927-2001
Routledge & Kegan Paul LTD, 1969
Buku Teks SO
Lowie, Robert H.
Holt Rinehart and Winston, 1937
Buku Teks SO
Garbarino, Merwyn
Holt, Rinehart and Winston, 1977
Buku Teks SO
Darnell, Regna
Harper & Row, 1974
Buku Teks SO
Hays, H.R.
Alfred A. Knofpf, 1958
Buku Teks SO