APA (7th ed.) Citation

Reiner, R., Ephron, N., Crystal, B., Sonnenfeld, B., & Ryan, M. Harry & Sally.

Chicago Style (17th ed.) Citation

Reiner, Rob, Nora Ephron, Billy Crystal, Barry Sonnenfeld, and Meg Ryan. Harry & Sally.

MLA (9th ed.) Citation

Reiner, Rob, et al. Harry & Sally.