Brock, R. (1949). The permabook of art masterpieces ([1st ed.].). Permabooks.
Chicago Style (17. basım) AtıfBrock, Ray. The Permabook of Art Masterpieces. [1st ed.]. New York: Permabooks, 1949.
MLA (8th ed.) AtıfBrock, Ray. The Permabook of Art Masterpieces. [1st ed.]. Permabooks, 1949.
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