Zahrida Wiryawan, author
Universitas Indonesia, 1987
UI - Skripsi (Membership)
Simmel, Georg
Verlag von Dunker & Humblot, 1926
Buku Teks
Katz, Jerrold J., author
Suhrkamp, 1969
Buku Teks
Becker, Hellmut, author
Verlag Rombach, 1962
Buku Teks
Eisler, Rudolf, 1873-1926, author
Berlin Mittler, 1904
Buku Referensi