Turner, J.D.
Macmillan, 1988
Buku Teks SO
Leslie Cromwell [and others]
Prentice-Hall, 1976
Buku Teks SO
Tompkins, Willis J.
Prentice-Hall, 1981
Buku Teks SO
Srivastava, A.C.
Vani Educational Books, [Date of publication not identified]
Buku Teks SO
Khandpur, Raghbir Singh, 1942-
McGraw-Hill, 2005
Buku Teks SO