APA (7th ed.) Citation

Sher, B. (1998). It's only too late if you don't start now: How to create your second life after forty. Delacorte Press.

Chicago Style (17th ed.) Citation

Sher, Barbara. It's Only Too Late If You Don't Start Now: How to Create Your Second Life After Forty. New York: Delacorte Press, 1998.

MLA (9th ed.) Citation

Sher, Barbara. It's Only Too Late If You Don't Start Now: How to Create Your Second Life After Forty. Delacorte Press, 1998.