Thompson, Warren S.
Tata McGraw-Hill, 1965
Buku Teks SO
edited by Maria D.D. Collins, Patrick L. Carr
Taylor and Francis, 2008
Buku Teks SO
Hampton, David R., compiler
McGraw-Hill, 1986
Buku Teks
Prescott, David
Harcourt Brace Jovanovich, 1993
Buku Teks
edited by Peter Quennell
The Nonesuch Press, 1949
Buku Teks SO