Oxford University Press , 1985
Buku Teks
Weitzman, Cay, author
Prentice-Hall, 1980
Buku Teks
Moverley, John, author
Harper-Collins, 1986
Buku Teks
Waite, Mitchell, author
H.W. Sams, 1980
Buku Teks
Dwisetya Safirna Widyaratih, author
2014
UI - Skripsi (Membership)