APA

(1999). Running Office 2000. MEXICO, MEXICO: MCGRAW HILL.

Chicago

1999. Running Office 2000. MEXICO, MEXICO: MCGRAW HILL.

Harvard

(1999). Running Office 2000. MEXICO, MEXICO: MCGRAW HILL.

MLA

Running Office 2000. MEXICO, MEXICO: MCGRAW HILL. 1999.