[ BIR REVENUE MEMORANDUM ORDER NO. 20-2008, March 23, 2008 ]
PRESCRIBING GUIDELINES FOR THE PRELIMINARY ANALYSIS AND AUDIT/VERIFICATION OF 2007 INTERNAL REVENUE TAX RETURNS AND THE CORRESPONDING TAX PAYMENTS FOR TAXPAYERS UNDER THE LARGE TAXPAYERS SERVICE AND REVENUE REGIONS/ REVENUE DISTRICT OFFICES*
* Text Available at Office of the National Administrative Register, U.P. Law Complex, Diliman, Quezon City