Venables, John A.
Cambridge University Press, 2000
Buku Teks SO
Dixon, Jean P.
D.Van Nostrand, 1968
Buku Teks
Creswell, Clifford J.
ITB Press, 1982
Buku Teks
Sadjadi, Samahe
Academic Press is an imprint of Elsevie, 2016
Buku Teks
Pearson, Anthony J.
John Wiley & Sons, 1985
Buku Teks