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Cremante, Simona. "Leonardo Da Vinci". Giunti, 1698.

Crispino, Enrica; Pedretti, Carlo; Frost, Catherine. "Leonardo: Art and Science". Giunti, 2001. ISBN 88-09-01511-8

Pedretti, Carlo. "A Chronology of Leonardo Da Vinci's Architectural Studies after 1500". Geneva: E. Droz, 1962.

Leonardo da Vinci: anatomical drawings from the Royal Library, Windsor Castle, exhibition catalog fully online as PDF from The Metropolitan Museum of Art, which contains material on Codex on the Flight of Birds (see index)

Kodeks karya Leonardo da Vinci