Ayres,Frank.JR. (1981). Theory and Problems of Differential equations: In S1 metric units / Frank Ayres,JR. McGraw-Hill Book Compannnnny.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAyres,Frank.JR. Theory and Problems of Differential Equations: In S1 Metric Units / Frank Ayres,JR. McGraw-Hill Book Compannnnny, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAyres,Frank.JR. Theory and Problems of Differential Equations: In S1 Metric Units / Frank Ayres,JR. McGraw-Hill Book Compannnnny, 1981.
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