Africa, G., Amilbangsa, G., Blancada, V., Costales, R., Flores, R., Quebral, G., . . . Umali, A. C. (1987). A Total systems study on the Marketing System of Metro, Inc. College of Engineering.
Chicago-Zitierstil (17. Ausg.)Africa, Gilbert, et al. A Total Systems Study on the Marketing System of Metro, Inc. Diliman, Quezon City: College of Engineering, 1987.
MLA-Zitierstil (9. Ausg.)Africa, Gilbert, et al. A Total Systems Study on the Marketing System of Metro, Inc. College of Engineering, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.