APA

A & D Author Team, . (1999). Basic Traning Isdn Office Communication Tequines. : .

Chicago

A & D Author Team, . 1999. Basic Traning Isdn Office Communication Tequines. : .

Harvard

A & D Author Team, . (1999). Basic Traning Isdn Office Communication Tequines. : .

MLA

A & D Author Team, . Basic Traning Isdn Office Communication Tequines. : . 1999.