Mohr, V. Marie
Gunung Agung, 1984
Buku Teks
Beaumont, Elizabeth, author
Oxford University Press, 2014
Buku Teks
Heater, Derek, author
Longman, 1990
Buku Teks
by William Ebenstein [and others]
Harper & Row, Publishers, 1970
Buku Teks
Dixon, Chris J., author
Routledge, 2015
Buku Teks