Tracy, Brian
Time power
Amacom, 2004
 Buku Teks
Mancini, Marc
Time management
McGraw-Hill, 2003
 Buku Teks
Cultures and time
The UNESCO Press, 1976
 Buku Teks
Bittel, Lester Robert
Right on time: the complete guide for time pressured managers
McGraw-Hill, 1991
 Buku Teks
Augustynek, Zdzislaw
Time: past, present, future
Kluwer Academic, 1989
 Buku Teks