Smith, J. N., author
'S Gravenhage; Albert Rusche & Co; M. Nijhoff, 1926
Buku Klasik
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