Efficient reading
Artikel Jurnal
Uris, Auren
The efficient executive
McGraw-Hill , 1957
Buku Teks
Becker, Selwyn W. (Selwyn William), 1929-
The efficient organization
Elsevier, 1975
Buku Teks SO
Effective vs efficient computing
Prentice-Hall, 1973
Buku Teks SO
Kennedy, Barry W.
Energy efficient transformers
McGraw-Hill, 1998
Buku Teks