APA (7th ed.) Citation

Tennyson, A. T. (1997). The Princess. Project Gutenberg.

Chicago Style (17th ed.) Citation

Tennyson, Alfred Tennyson. The Princess. Project Gutenberg, 1997.

MLA (9th ed.) Citation

Tennyson, Alfred Tennyson. The Princess. Project Gutenberg, 1997.

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