Kerman, Joseph
Worth Publishers, 1996
Buku Teks SO
Frye, Richard N.
Henry Holt, 1953
Buku Teks SO
Frye, Richard N.
George Allen & Unwin, 1960
Buku Teks SO
edited by Michael J. Novacek and Quentin D. Wheeler
Columbia Univerdity Press, 1992
Buku Teks SO
Swanson, Timothy M.
Macmillan, 1994
Buku Teks