APA (7th ed.) Citation

Bent, T., & Bent, J. T. (2007). Southern Arabia. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bent, Theodore, and J. Theodore Bent. Southern Arabia. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Bent, Theodore, and J. Theodore Bent. Southern Arabia. Project Gutenberg, 2007.

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