Held, Lewis I., 1951-, author
Cambridge University Press, 2014
Buku Teks
Mahoney, Jean, author
Tuttle, 2001
Buku Teks
Tan, Hock Beng, 1962-, author
Page one Publishing, 1999
Buku Referensi
Feith, Rhijnvis
W. van Hoeve, [date of publication not identified]
Buku Teks
Feith, Rhijnvis
[publisher not identified], [date of publication not identified]
Buku Teks