edited by Harold M. Groves
Henry Holt Company , 1950
Buku Teks
edited by Harold M. Groves
Henry Holt and Company , 1947
Buku Teks
Rahadi, author
Universitas Indonesia, 1998
UI - Tesis (Membership)
Maria Carmelia Widiastuti, author
1996
UI - Tesis (Membership)
Appleton-Century-Crofts, 1966
Buku Teks