edited by John L. Gittleman
Comstock , 1989
Buku Teks
Ewer, J.R.
Longman, 1969
Buku Teks
Brissenden, R.F. (Robert Francis), 1928-1991
Published for the British Council and the National Book League by Longmans, Green & Co, 1958
Buku Teks
Karmakar, Ayan
Springer Nature, 2019
eBooks
Sinambela, Joni
2015
UI - Tesis (Membership)