Szarkowski, J. (2002). A city seen: Photographs from The George Gund Foundation Collection [ :. on the occasion of the 50th anniversary of The George Gund Foundation and the exhibition.].
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিSzarkowski, John. A City Seen: Photographs from The George Gund Foundation Collection [ :. on the Occasion of the 50th Anniversary of The George Gund Foundation and the Exhibition.]. Cleveland, 2002.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিSzarkowski, John. A City Seen: Photographs from The George Gund Foundation Collection [ :. on the Occasion of the 50th Anniversary of The George Gund Foundation and the Exhibition.]. 2002.
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