APA-referens (7:e uppl.)

Aguirre, I. J., Cruz, R., Primicas, J. J., Remigid, R., & Tiu, L. (1993). A Work study on Company X (a printing press). College of Engineering.

Chicago-referens (17:e uppl.)

Aguirre, Ian Jason, Redentor Cruz, Jose Jesus Primicas, Reubenllexo Remigid, och Luther Tiu. A Work Study on Company X (a Printing Press). Diliman, Quezon City: College of Engineering, 1993.

MLA-referens (9:e uppl.)

Aguirre, Ian Jason, et al. A Work Study on Company X (a Printing Press). College of Engineering, 1993.