Gelder, Louis Machiel Fredanus van, 1869-
Van Holkema & Warendorf, 1894
Buku Teks
edited by Olivera Simic
Springer, 2012
eBooks
Artikel Jurnal
edited by William J. Durch
Macmillan, 1994
Buku Teks
translated by Tam Lye Suan
Director-General Department of Infomartion Malaysia, 2008
Buku Referensi