APA (7th ed.) Citation

Ariel. (2010). The Negro: What is His Ethnological Status? 2nd Ed. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ariel. The Negro: What Is His Ethnological Status? 2nd Ed. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Ariel. The Negro: What Is His Ethnological Status? 2nd Ed. Project Gutenberg, 2010.

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