Taylor, John Keenan
Lewis Publishers, 1990
Buku Teks SO
Freund, John E.
Prentice-Hall, 1960
Buku Teks SO
Blackwell, David
Dover, 1954
Buku Teks SO
Daniel, Wayne W.
Houghton Miffiln, 1989
Buku Teks SO
Mosbaek, Ernest J.
North-Holland Publishing, 1970
Buku Teks SO