APA (7th ed.) Citation

Gordon, L. D., Erichsen, N., & James, M. H. (2012). The Story of Assisi. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gordon, Lina Duff, Nelly Erichsen, and M. Helen James. The Story of Assisi. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Gordon, Lina Duff, et al. The Story of Assisi. Project Gutenberg, 2012.

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