1
Έκδοση 1990
Full text available from Accounting & Tax Database: 01/01/1992 to 04/30/1992
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
2
Full text available from Criminal Justice Database: 07/01/2009 to present
Full text available from Research Library: 07/01/2009 to present
Full text available from Social Science Database: 07/01/2009 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
3
Έκδοση 1994
Full text available from ABI/INFORM Dateline: 09/01/2001 to 11/30/2009
Full text available from Engineering Database: 09/01/2001 to 11/30/2009
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
4
Full text available from ABI/INFORM Global: 01/01/1996 to present
Full text available from Research Library: 01/01/1996 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό