Director, Stephen W., 1943-, author
John Wiley & Sons, 1975
Buku Teks
Wing, Omar, author
Holt, Rinehart and Winston, 1972
Buku Teks
Lago, Gladwyn V.
John Wiley & Sons, 1979
Buku Teks
Kinariwala, Bharat, author
John Wiley & Sons, 1973
Buku Teks
Budak, Aram, author
Prentice-Hall, 1978
Buku Teks