Brock, R. (1949). The permabook of art masterpieces ([1st ed.].). Permabooks.
Chicago Style aipamenaBrock, Ray. The Permabook of Art Masterpieces. [1st ed.]. New York: Permabooks, 1949.
MLA aipamenaBrock, Ray. The Permabook of Art Masterpieces. [1st ed.]. Permabooks, 1949.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.