Dyfyniad APA

Costales, A. C. (2000). Economics: Principles and applications. JMC Press.

Dyfyniad Arddull Chicago

Costales, Achilles C. Economics: Principles and Applications. Quezon City: JMC Press, 2000.

Dyfyniad MLA

Costales, Achilles C. Economics: Principles and Applications. JMC Press, 2000.

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