Gunther, John, 1901-1970
Hamish Hamilton, 1939
Buku Referensi
Tuti Nuriah Erwin
FEUI, 1990
Buku Teks
Cha-Am, 2002
Buku Referensi
Broeze, Frank J.A., author
[Publisher not identified], 1974
Buku Teks
Reid, Anthony, 1939-, author
Yayasan Pustaka Obor Indonesia, 2011
Buku Teks