APA (7th ed.) Citation

Sheldon, S. (1985). If tomorrow comes. HarperCollins.

Chicago Style (17th ed.) Citation

Sheldon, Sidney. If Tomorrow Comes. London: HarperCollins, 1985.

MLA (8th ed.) Citation

Sheldon, Sidney. If Tomorrow Comes. HarperCollins, 1985.

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