Hummel, James A.
Addison-Wesley, 1965
Buku Teks SO
edited by Margit Kovacs
Ellis Horwood, 1992
Buku Teks SO
edited by Jean Michel Merillon, Kishan Gopal Ramawat
Springer, 2012
eBooks
Liebeck, Pamela
Oxford Pergamon Press 1971,
Buku Teks SO
edited by R. Charudattan and H.L. Walker
John Wiley & Sons, 1982
Buku Teks SO