APA
Held B., Richardson T., . (2015). Microsoft Excel functions and formulas. New Delhi: BPB Publications.
Chicago
Held Bernd, Richardson Theodor, . 2015. Microsoft Excel functions and formulas. New Delhi: BPB Publications.
Harvard
Held B., Richardson T., . (2015). Microsoft Excel functions and formulas. New Delhi: BPB Publications.
MLA
Held Bernd, Richardson Theodor, . Microsoft Excel functions and formulas. New Delhi: BPB Publications. 2015.