Wallace, Robert, author
N.V. Het Parool, 1968
Buku Referensi
Stolpe, Sven
Charles Scribner's, 1966
Buku Teks
Buggy, Hugh
Widescope International, 1977
Buku Teks
by Paik Chull [and others]
Mirae Munhwa Sa, 1981
Buku Teks
Perum Percetakan Uang Republik Indonesia, [date of publication not identified]
Buku Referensi