Cita APA (7th ed.)

De Guzman, D. (1997). Guide for effective study. Manila Bulletin.

Cita Chicago (17th ed.)

De Guzman, Desiderio. "Guide for Effective Study." Manila Bulletin 1997.

Cita MLA (9th ed.)

De Guzman, Desiderio. "Guide for Effective Study." Manila Bulletin, 1997.