APA (7th ed.) Citation

Mansfield, M. F., & McManus, B. (2010). The Cathedrals and Churches of the Rhine. Project Gutenberg.

Chicago Style (17th ed.) Citation

Mansfield, M. F., and Blanche McManus. The Cathedrals and Churches of the Rhine. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Mansfield, M. F., and Blanche McManus. The Cathedrals and Churches of the Rhine. Project Gutenberg, 2010.

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