APA (7th ed.) Citation

Fenn, G. M., & Keyl, F. W. (2007). Featherland How the Birds lived at Greenlawn. Project Gutenberg.

Chicago Style (17th ed.) Citation

Fenn, George Manville, and Friedrich Wilhelm Keyl. Featherland How the Birds Lived at Greenlawn. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Fenn, George Manville, and Friedrich Wilhelm Keyl. Featherland How the Birds Lived at Greenlawn. Project Gutenberg, 2007.

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