Παραπομπή σε μορφή APA (7η εκδ.)

Gamboa, A. M. S. J. (2002). Development of tax forecasting models: Corporate and individual income taxes. Philippine Institute for Development Studies.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gamboa, Ana Ma Sophia J. Development of Tax Forecasting Models: Corporate and Individual Income Taxes. Makati City: Philippine Institute for Development Studies, 2002.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gamboa, Ana Ma Sophia J. Development of Tax Forecasting Models: Corporate and Individual Income Taxes. Philippine Institute for Development Studies, 2002.