Citazione Stile APA (7a Edizione)

Llamado, C. P., & De Vera, J. L. (2020). Philippine income tax: Volume 1 (2020 Edition.). GIC Enterprises.

Citazione stile Chigago Style (17a edizione)

Llamado, Christopher P., e Jack L.A De Vera. Philippine Income Tax: Volume 1. 2020 Edition. Manila: GIC Enterprises, 2020.

Citatione MLA (9a ed.)

Llamado, Christopher P., e Jack L.A De Vera. Philippine Income Tax: Volume 1. 2020 Edition. GIC Enterprises, 2020.