APA (7th ed.) Citation

Hanshew, M. E., & Hanshew, T. W. (2013). The Riddle of the Purple Emperor. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hanshew, Mary E., and Thomas W. Hanshew. The Riddle of the Purple Emperor. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Hanshew, Mary E., and Thomas W. Hanshew. The Riddle of the Purple Emperor. Project Gutenberg, 2013.

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