Gaya APA
Kern, H.
(1936).
Verspreide geschriften: Supplement.
.
's-Gravenhage:
's-Gravenhage Martinus Nijhoff.
Gaya MLA
Kern, H..
"Verspreide geschriften: Supplement. ".
's-Gravenhage:
's-Gravenhage Martinus Nijhoff,
1936.
Buku.