Close, Guy C.
John Wiley & Son, Inc., 1960
Buku Teks
Lehrer, Robert N., author
Prentice-Hall, 1959
Buku Teks
Abruzzi, Adam
Columbia University Press, 1953
Buku Teks
Fryman, Mark a.
Delmar / Thomson Learning, 2002
Multimedia
Hugo Wibowo Haryoseno, author
2018
UI - Skripsi (Membership)