APA (7th ed.) Citation

Polo, M., Harris, P., & Thubron, C. (2008). The travels of Marco Polo, the Venetian (New ed.). Alfred A. Knopf.

Chicago Style (17th ed.) Citation

Polo, Marco, Peter Harris, and Colin Thubron. The Travels of Marco Polo, the Venetian. New ed. New York: Alfred A. Knopf, 2008.

MLA (9th ed.) Citation

Polo, Marco, et al. The Travels of Marco Polo, the Venetian. New ed. Alfred A. Knopf, 2008.