APA (7th ed.) Citation

Blois, L. d., & Spek, R. v. d. (1997). An Introduction to the Ancient World.

Chicago Style (17th ed.) Citation

Blois, Lukas de, and R.J. van der Spek. An Introduction to the Ancient World. London/New York, 1997.

MLA (8th ed.) Citation

Blois, Lukas de, and R.J. van der Spek. An Introduction to the Ancient World. 1997.