Style de citation APA (7e éd.)

(1998). BIR Tax calendar: BIR enters the age of information technology. Bureau of Internal Revenue.

Style de citation Chicago (17e éd.)

BIR Tax Calendar: BIR Enters the Age of Information Technology. s.l: Bureau of Internal Revenue, 1998.

Style de citation MLA (9e éd.)

BIR Tax Calendar: BIR Enters the Age of Information Technology. Bureau of Internal Revenue, 1998.