East West Center Press, 1987
Buku Teks
Cairncross, Sandy
John Wiley & Sons, 1993
Buku Teks
edited by John Edwards ... [et al.]
John Wiley and Sons, 1983
Buku Teks
by John W. Dickey ... [and others]
Tata McGraw-Hill, 1980
Buku Teks
by John W. Dickey ... [and others]
McGraw-Hill, 1983
Buku Teks