APA
Phillips J., . (2006). Leonardo da Vinci. Washington, D.C: National Geographic.
Chicago
Phillips John, . 2006. Leonardo da Vinci. Washington, D.C: National Geographic.
Harvard
Phillips J., . (2006). Leonardo da Vinci. Washington, D.C: National Geographic.
MLA
Phillips John, . Leonardo da Vinci. Washington, D.C: National Geographic. 2006.