Orilia, Lawrence
John Wiley & Sons, 1972
Buku Teks
Carter, Norman H.
Dickenson , [s.a.]
Buku Teks
Thierauf, Robert J.
John Wiley & Sons, 1980
Buku Teks
Thierauf, Robert J.
John Wiley , 1980
Buku Teks
Awad, Elias M.
Prentice-Hall International, 1980
Buku Teks