APA (7th ed.) Citation

O'Connor, J., & O'Brien, J. (2017). Where is the Colosseum? Grosset & Dunlap.

Chicago Style (17th ed.) Citation

O'Connor, Jim, and John O'Brien. Where Is the Colosseum? New York, New York: Grosset & Dunlap, 2017.

MLA (8th ed.) Citation

O'Connor, Jim, and John O'Brien. Where Is the Colosseum? Grosset & Dunlap, 2017.

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