APA (7th ed.) Citation

Sarmiento de Gamboa, P., & Markham, C. R. (2006). History of the Incas. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sarmiento de Gamboa, Pedro, and Clements R. Markham. History of the Incas. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Sarmiento de Gamboa, Pedro, and Clements R. Markham. History of the Incas. Project Gutenberg, 2006.

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