Cita APA (7th ed.)

Bello, A. L. (2007). Economics: An introduction. C & E Pub.

Cita Chicago (17th ed.)

Bello, Amelia L. Economics: An Introduction. Quezon City: C & E Pub, 2007.

Cita MLA (9th ed.)

Bello, Amelia L. Economics: An Introduction. C & E Pub, 2007.