APA
Frye C., Lambert M. I., Lambert S., Preppernau J. & Murray K. (2007). Step by step 2007 microsoft office system. New Delhi: Prentice-Hall of India.
Chicago
Frye Curtis, Lambert M.Dow III, Lambert Steve, Preppernau Joan and Murray Katherine. 2007. Step by step 2007 microsoft office system. New Delhi: Prentice-Hall of India.
Harvard
Frye C., Lambert M. I., Lambert S., Preppernau J. and Murray K. (2007). Step by step 2007 microsoft office system. New Delhi: Prentice-Hall of India.
MLA
Frye Curtis, Lambert M.Dow III, Lambert Steve, Preppernau Joan and Murray Katherine. Step by step 2007 microsoft office system. New Delhi: Prentice-Hall of India. 2007.
