Neumann, J.H. (Johann Heinrich), 1876-1949, author
Lembaga Kebudajaan Indonesia, 1951
Buku Teks
Neumann, J.H. (Johann Heinrich), 1876-1949, author
Varekamp, 1951
Buku Referensi
Vries, Jan de, author
Het Spectrum, 1991
Buku Teks
Bruggencate, K. Ten, author
J.B. Wolters-Groningen, [Date of publication not identified]
Buku Referensi
Geldern, I. Van, author
BIJ J. B. Wolters U. M., [date of publication not identified]
Buku Referensi