APA (7e ed.) Bronvermelding

Abrina, J. J., Aspra, E., & Mapue, M. C. (1994). Garahe Leathercraft: A production systems study. College of Engineering.

Chicago (17e ed.) Bronvermelding

Abrina, Juan Jr, Edilynn Aspra, en Ma. Concepcion Mapue. Garahe Leathercraft: A Production Systems Study. Diliman, Quezon City: College of Engineering, 1994.

MLA (9e ed.) Bronvermelding

Abrina, Juan Jr, et al. Garahe Leathercraft: A Production Systems Study. College of Engineering, 1994.