Deutsch, Karl Wolfgang, 1912-1992, author
Prentice-Hall, 1978
Buku Teks
Viotti, Paul R
Longman, 2012
Buku Teks
Moon, Parker Thomas, author
Macmillan, 1926
Buku Referensi
Synne L. Dyvik, Jan Selby and Rorden Wilkinson, editora
Routledge, Taylor & Francis Group, 2017
Buku Teks
Chan Stephen; Moore Cerwyn
Sage, 2006
Buku Teks