Rybacki, Karyn C. (Karyn Charles), 1947-
Pearson, 2014
Buku Teks
Sloane, Thomas O.
Oxford University Press, 2001
Buku Referensi
Aarts, Bas
Palgrave Macmillan, 2008
Buku Teks
Jordan, John E.
Harper & Row, Publishers, 1965
Buku Teks
Winterowd, W. Ross
Holt, Rinehart and Winston, 1968
Buku Teks