APA (7th ed.) Citation

Cobb, I. S. A laugh a day keeps the doctor away.

Chicago Style (17th ed.) Citation

Cobb, Irvin S. A Laugh a Day Keeps the Doctor Away.

MLA (9th ed.) Citation

Cobb, Irvin S. A Laugh a Day Keeps the Doctor Away.

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