APA (7th ed.) Citation

Ptahhotep, Kagemna, & Gunn, B. G. (2009). The Instruction of Ptah-Hotep and the Instruction of Ke'Gemni The Oldest Books in the World. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ptahhotep, Kagemna, and Battiscombe G. Gunn. The Instruction of Ptah-Hotep and the Instruction of Ke'Gemni The Oldest Books in the World. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Ptahhotep, et al. The Instruction of Ptah-Hotep and the Instruction of Ke'Gemni The Oldest Books in the World. Project Gutenberg, 2009.

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