APA (7th ed.) Citation

Salisbury, S., & Le Plongeon, A. (2009). The Mayas, the Sources of Their History Dr. Le Plongeon in Yucatan, His Account of Discoveries. Project Gutenberg.

Chicago Style (17th ed.) Citation

Salisbury, Stephen, and Augustus Le Plongeon. The Mayas, the Sources of Their History Dr. Le Plongeon in Yucatan, His Account of Discoveries. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Salisbury, Stephen, and Augustus Le Plongeon. The Mayas, the Sources of Their History Dr. Le Plongeon in Yucatan, His Account of Discoveries. Project Gutenberg, 2009.

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