APA aipamena

Koch, C. (1980). The essay. Textbook Development Committee, De La Salle University.

Chicago Style aipamena

Koch, Carl. The Essay. Manila: Textbook Development Committee, De La Salle University, 1980.

MLA aipamena

Koch, Carl. The Essay. Textbook Development Committee, De La Salle University, 1980.

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