Skidmore, Rex A. (Rex Austin), author
Prentice Hall International, 1991
Buku Teks
Skidmore, Rex A. (Rex Austin), author
Prentice Hall International, 1991
Buku Teks
Skidmore, Rex A. (Rex Austin), author
Prentice-Hall, 1994
Buku Teks
Dubois, Brenda, 1949-, author
Allyn and Boston, 1992
Buku Teks
Rhodhes, Margaret L., author
Routledge and Kegan Paul, 1986
Buku Teks