Waterdrinker, Pieter
Uitgeverij De Arbeiderspers, 2001
Buku Teks
Lambert, Sylvie
Roto Vision, 1998
Buku Referensi
edited by Robert Gordon
Academic Press, 1972
Buku Teks SO
[Publisher not identified], [Date of publication not identified]
Naskah
Homan, Welmoed
Wolters-Noordhoff, 2000
Buku Teks