Ayres,Frank,JR. (1967). Theory and problems of projective Geometry / Frank Ayres,JR. McGraw-Hill Book Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAyres,Frank,JR. Theory and Problems of Projective Geometry / Frank Ayres,JR. McGraw-Hill Book Company, 1967.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAyres,Frank,JR. Theory and Problems of Projective Geometry / Frank Ayres,JR. McGraw-Hill Book Company, 1967.
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