APA (7th ed.) Citation

Bowditch, C. P. (2012). Was the Beginning Day of the Maya Month Numbered Zero (or Twenty) or One? Project Gutenberg.

Chicago Style (17th ed.) Citation

Bowditch, Charles P. Was the Beginning Day of the Maya Month Numbered Zero (or Twenty) or One? Project Gutenberg, 2012.

MLA (9th ed.) Citation

Bowditch, Charles P. Was the Beginning Day of the Maya Month Numbered Zero (or Twenty) or One? Project Gutenberg, 2012.

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