APA (7th ed.) Citation

Cobb, I. S. (1923). A laugh a day keeps the doctor away. G. H. Doran.

Chicago Style (17th ed.) Citation

Cobb, Irvin S. A Laugh a Day Keeps the Doctor Away. New York: G. H. Doran, 1923.

MLA (9th ed.) Citation

Cobb, Irvin S. A Laugh a Day Keeps the Doctor Away. G. H. Doran, 1923.