Fletcher, Robert H.
Gajah Mada University Press , 1991
Buku Teks
Fletcher, Robert H.
Gadjah Mada University Press, 1992
Buku Teks
Friedman, Gary D.
McGraw-Hill, 1980
Buku Teks
Azrul Azwar
Bina Rupa Aksara, 1988
Buku Teks
Rothman, Kenneth J.
Yayasan Pustaka Nusatama, 1995
Buku Teks