APA

(2001). Managing And Maintaining Microsoft Exchange Server 5.5 (W/Cd). : .

Chicago

2001. Managing And Maintaining Microsoft Exchange Server 5.5 (W/Cd). : .

Harvard

(2001). Managing And Maintaining Microsoft Exchange Server 5.5 (W/Cd). : .

MLA

Managing And Maintaining Microsoft Exchange Server 5.5 (W/Cd). : . 2001.