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.
Citace podle Chicago (17th ed.)Africa, Gilbert, et al. A Total Systems Study on the Marketing System of Metro, Inc. Diliman, Quezon City: College of Engineering, 1987.
Citace podle MLA (9th ed.)Africa, Gilbert, et al. A Total Systems Study on the Marketing System of Metro, Inc. College of Engineering, 1987.
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