APA (7th ed.) Citation

Gregory, J., & Johnson, F. T. (2006). Wolf Breed. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gregory, Jackson, and Frank Tenney Johnson. Wolf Breed. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Gregory, Jackson, and Frank Tenney Johnson. Wolf Breed. Project Gutenberg, 2006.

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