Wirkendes, Wort
Padagogischer Verl Schwann , 1962
Buku Teks
Hirt, Herman
Calr Winters Universitatsbuchandlung, 1912
Buku Teks
Bergmann, Rolf
Winter, 1981
Buku Teks
Peltzer, Karl, author
Ott Verlag Thun, 1966
Buku Referensi
Tarsisius Afirman, author
2001
UI - Skripsi (Membership)