Cita APA (7th ed.)

Aspera, R., Entico, M. C. E., & Rodriguez, S. D. (2002). A methods engineering study on Garjel Bag Industry. College of Engineering.

Cita Chicago (17th ed.)

Aspera, Romeo, Maria Cecilia E. Entico, i Sharmaine D. Rodriguez. A Methods Engineering Study on Garjel Bag Industry. Diliman, Quezon City: College of Engineering, 2002.

Cita MLA (9th ed.)

Aspera, Romeo, et al. A Methods Engineering Study on Garjel Bag Industry. College of Engineering, 2002.