Vleeskruyer, Rudolf
Amsterdam North-Holland Publishing 1953
Buku Teks
Boston [etc.] DC Heath and Company 1050
Buku Teks
Cambridge At The University Press 1952
Buku Teks
Brugge, CJM Lubbers-Van der
Groningen Wolters 1951
Buku Teks
Amsterdam : Swets & Zeitlinger
Majalah, Jurnal, Buletin