Cita APA (7th ed.)

Catibog, E., Lainez, L., & Regalado, M. (1999). A Systems study of Jose S. Galang and Sons Concrete Products, Inc. College of Engineering.

Cita Chicago (17th ed.)

Catibog, Eliza, Leon Lainez, i Mitch Regalado. A Systems Study of Jose S. Galang and Sons Concrete Products, Inc. Diliman, Quezon City: College of Engineering, 1999.

Cita MLA (9th ed.)

Catibog, Eliza, et al. A Systems Study of Jose S. Galang and Sons Concrete Products, Inc. College of Engineering, 1999.