APA (7th ed.) Citation

Humble, R. (1975). Marco Polo. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Humble, Richard. Marco Polo. London: Weidenfeld and Nicolson, 1975.

MLA (9th ed.) Citation

Humble, Richard. Marco Polo. Weidenfeld and Nicolson, 1975.

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