APA (7th ed.) Citation

Boulanger, D., & Hečková, H. Siréna.

Chicago Style (17th ed.) Citation

Boulanger, Daniel, and Hana Hečková. Siréna.

MLA (9th ed.) Citation

Boulanger, Daniel, and Hana Hečková. Siréna.

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