APA (7th ed.) Citation
Kelly, J. J. (1997). The essence of logic. Prentice Hall.
Chicago Style (17th ed.) Citation
Kelly, John J. The Essence of Logic. New Delhi: Prentice Hall, 1997.
MLA (9th ed.) Citation
Kelly, John J. The Essence of Logic. Prentice Hall, 1997.
Warning: These citations may not always be 100% accurate.