APA (7th ed.) Citation

Allen, D. (2003). Ready for anything: 52 productivity principles for work and life. Penguin Books.

Chicago Style (17th ed.) Citation

Allen, David. Ready for Anything: 52 Productivity Principles for Work and Life. New York: Penguin Books, 2003.

MLA (8th ed.) Citation

Allen, David. Ready for Anything: 52 Productivity Principles for Work and Life. Penguin Books, 2003.

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