Frankel, Joseph
bina Aksara, 1988
Buku Teks
Hicks, Herbert G.
Bina Aksara, 1987
Buku Teks
Lamont, Christopher K.
Sage Publications Ltd., 2015
Buku Teks
Jahoda, Marie
The Dryden Press , 1955
Buku Teks
Deutsch, Karl Wolfgang, 1912-1992
Prentice-Hall, 1978
Buku Teks