Cita APA (7th ed.)

Sibal, J. V., Gaddi, R. S., Mercado, R. C., & Recalde, H. R. (2010). Sustainable employment relationships. Central Book Supply.

Cita Chicago (17th ed.)

Sibal, Jorge V., Rebecca Samson Gaddi, Rosalinda C. Mercado, i Hipolita R. Recalde. Sustainable Employment Relationships. Quezon City: Central Book Supply, 2010.

Cita MLA (9th ed.)

Sibal, Jorge V., et al. Sustainable Employment Relationships. Central Book Supply, 2010.