Hutagalung, Adriana, author
1995
UI - Tesis (Membership)
Dean, Vera Micheles
The New American Library, 1960
Buku Teks
Gibson, Charles, author
Harper & Row, 1966
Buku Teks
Crawford, William R., author
Frederick A. Praeger, 1961
Buku Teks
Berle, Adolf A., Jr., author
Harper & Row, [1962]
Buku Teks