Vilbrandt, Frank C.
Chemical engineering plant design / Frank G. Vilbrandt, Charles E. Dryden
McGraw-Hill Kogakusha, Ltd., 1959
 Buku Teks SO
Mitchell, Robert L.
Engineering economics
John Wiley & Sons, 1980
 Buku Teks SO
Riggs, James L.
Engineering economics
McGraw-Hill, 1996
 Buku Teks SO
Riggs, James L.
Engineering economics
McGraw-Hill, 1982
 Buku Teks SO
Hall, Donald
Basic acoustics/ Donald E. Hall
John Wiley & Sons, 1987
 Buku Teks SO