APA-referens (7:e uppl.)

IPG Professional Advancement & Business Center Of The Philippines. The new BIR requirements in filing tax returns.

Chicago-referens (17:e uppl.)

IPG Professional Advancement & Business Center Of The Philippines. The New BIR Requirements in Filing Tax Returns.

MLA-referens (9:e uppl.)

IPG Professional Advancement & Business Center Of The Philippines. The New BIR Requirements in Filing Tax Returns.

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