Sutherland, John, 1938-, author
Random House Books, 2013
Buku Teks
Pushkarev, S. G. (Sergei Germanovich), 1888-1980, compiler
Yale University Press, 1970
Buku Referensi
Mackie, Raymond K.
Addiason Wesley Longman, 1999
Buku Teks
Niles Christensen [and others]
Illinois Scott, Foresman , 1984
Buku Teks
Strong, William S.
MIT Press, 1981
Buku Teks