Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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