APA Citation

(2009). The solitude: A celebration 225 years in the making. Philadelphia, Pa.: [Philadelphia Zoo Development Office].

Chicago Style Citation

The Solitude: A Celebration 225 Years in the Making. Philadelphia, Pa.: [Philadelphia Zoo Development Office], 2009.

MLA Citation

The Solitude: A Celebration 225 Years in the Making. Philadelphia, Pa.: [Philadelphia Zoo Development Office], 2009.

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