APA (7th ed.) Citation

Gronau, G. (1903). Leonardo da Vinci / by G. Gronau. Duckworth.

Chicago Style (17th ed.) Citation

Gronau, G. Leonardo Da Vinci / by G. Gronau. Duckworth, 1903.

MLA (9th ed.) Citation

Gronau, G. Leonardo Da Vinci / by G. Gronau. Duckworth, 1903.

Warning: These citations may not always be 100% accurate.