APA (7th ed.) Citation

Tallis, T., & Summerly, J. Spem in alium.

Chicago Style (17th ed.) Citation

Tallis, Thomas, and Jeremy Summerly. Spem in Alium.

MLA (9th ed.) Citation

Tallis, Thomas, and Jeremy Summerly. Spem in Alium.

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