APA (7th ed.) Citation

Gillette, H. S., & author, t. (1962). Leonardo da Vinci: Pathfinder of science. Franklin Watts.

Chicago Style (17th ed.) Citation

Gillette, Henry S., and the author. Leonardo Da Vinci: Pathfinder of Science. New York: Franklin Watts, 1962.

MLA (9th ed.) Citation

Gillette, Henry S., and the author. Leonardo Da Vinci: Pathfinder of Science. Franklin Watts, 1962.