APA (7th ed.) Citation

dos Santos, J. R., & Entrekin, A. (2008). Codex 632: The secret identity of Christopher Columbus. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

dos Santos, Jose Rodrigues, and Alison Entrekin. Codex 632: The Secret Identity of Christopher Columbus. New York: HarperCollins Publishers, 2008.

MLA (9th ed.) Citation

dos Santos, Jose Rodrigues, and Alison Entrekin. Codex 632: The Secret Identity of Christopher Columbus. HarperCollins Publishers, 2008.

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