Kluwer Academic Publishers, 1995,
Buku Referensi
Gambhir, R.S.
Tata McGraw-Hill, 1980
Buku Teks
edited by H. Ratajezak, W.J. Orville-Thomas
John Wiley & Sons, 1982
Buku Teks SO
edited by James F. Lawrence
Academic press, 1984
Buku Teks
Christopher Alexander...[et al.]
Oxford University Press, 1975
Buku Teks