APA (7th ed.) Citation

Swank, H., Blethyn, B., & Claflin, S. Mary and Martha.

Chicago Style (17th ed.) Citation

Swank, Hilary, Brenda Blethyn, and Sam Claflin. Mary and Martha.

MLA (8th ed.) Citation

Swank, Hilary, et al. Mary and Martha.

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