Artikel Jurnal
Fietta, Stephen
Oxford University Press, 2016
Buku Teks
Colombos, C. John
Longman, 1959
Buku Teks
Colombos, C. John
Longmans, Green and Co., 1954
Buku Teks
Cindejayanimitta Dwi Anggaramurti
Program Pascasarjana Universitas Indonesia, 2015
UI - Tesis Membership