APA (7th ed.) Citation

Gade, J. A. (2010). Cathedrals of Spain. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gade, John A. Cathedrals of Spain. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Gade, John A. Cathedrals of Spain. Project Gutenberg, 2010.

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