Philadelphia Museum of Art. Division of Education & Harbeson, J. F. (1964). Nine centuries of chessmen: The collection of John F. Harbeson. April 17-May 17, 1964.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhiladelphia Museum of Art. Division of Education और John F. Harbeson. Nine Centuries of Chessmen: The Collection of John F. Harbeson. April 17-May 17, 1964. [Philadelphia?], 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPhiladelphia Museum of Art. Division of Education और John F. Harbeson. Nine Centuries of Chessmen: The Collection of John F. Harbeson. April 17-May 17, 1964. 1964.
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