APA (7th ed.) Citation

Risley, R. V. (2010). The Sentimental Vikings. Project Gutenberg.

Chicago Style (17th ed.) Citation

Risley, R. V. The Sentimental Vikings. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Risley, R. V. The Sentimental Vikings. Project Gutenberg, 2010.

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