APA (7 वां संस्करण) प्रशस्ति पत्र

Martin, G. (1968). General metaphysics: Its problems and its method. Allen & Unwin.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Martin, Gottfried. General Metaphysics: Its Problems and Its Method. Allen & Unwin, 1968.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Martin, Gottfried. General Metaphysics: Its Problems and Its Method. Allen & Unwin, 1968.

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