APA (7th ed.) Citation

Barnum, P. T. (1889). Life of P.T. Barnum. George Routledge and Sons.

Chicago Style (17th ed.) Citation

Barnum, P. T. Life of P.T. Barnum. London: George Routledge and Sons, 1889.

MLA (9th ed.) Citation

Barnum, P. T. Life of P.T. Barnum. George Routledge and Sons, 1889.

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