Alexander, Christopher
Oxford University Press, 1977
Buku Referensi
Grow, Thomas A.
Prentice-Hall, 1975
Buku Teks SO
by Christopher Alexander ... [and others]
Oxford University Press, 1977
Buku Teks SO
McCarthy, Richard C.
American Library Association, 2007
eBooks
Allen, Edward
Erlangga, 2005
Buku Teks SO