Turner, Jonathan H.
Thomson, Wadsworth, 2007
Buku Teks SO
Brownlee, W. Elliot, 1941-
Cambridge University Press, 2016
Buku Teks
Tindall, George Brown
Norton, 1992
Buku Referensi
Risjord, Norman K.
Prentice-Hall, 1985
Buku Teks
Tindall, George Brown
WW Norton , 2013
Buku Teks