Esser, B.J., author
G. Kolff, [date of publication not identified]
Buku Klasik
Walbeehm, A.H.J.G., author
[publisher not identified], [date of publication not identified]
Buku Klasik
Amsterdam [etc.] Elsevier 1948
Buku Teks
Miller, George A. (George Armitage), 1920-2012
Natuur & Techniek, 1993
Buku Teks
Sterkenburg, P.G.J. van
's-Gravenhage, 1989
Buku Teks