APA (7th ed.) Citation

Austen, J., Telscombe, A., & Another lady. (1976). Sanditon. New American Library.

Chicago Style (17th ed.) Citation

Austen, Jane, Anne Telscombe, and Another lady. Sanditon. [New York]: New American Library, 1976.

MLA (9th ed.) Citation

Austen, Jane, et al. Sanditon. New American Library, 1976.