APA (7th ed.) Citation

Norway, A. H., & Grieffenhagen, M. (2012). Naples Past and Present. Project Gutenberg.

Chicago Style (17th ed.) Citation

Norway, Arthur H., and Maurice Grieffenhagen. Naples Past and Present. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Norway, Arthur H., and Maurice Grieffenhagen. Naples Past and Present. Project Gutenberg, 2012.

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