Just surround the date by quotation marks:
=GOOGLEFINANCE("GOOG","price","12/13/2013")
Also, if you want only the number, wrap it in INDEX formula
=INDEX(GOOGLEFINANCE("GOOG","price","12/13/2013"),2,2)
Just surround the date by quotation marks:
=GOOGLEFINANCE("GOOG","price","12/13/2013")
Also, if you want only the number, wrap it in INDEX formula
=INDEX(GOOGLEFINANCE("GOOG","price","12/13/2013"),2,2)