Bach, R. (1973). Jonathan Livingston Seagull: A story. Avon Books.
Lua i Stíl Chicago (17ú heag.)Bach, Richard. Jonathan Livingston Seagull: A Story. New York, Estados Unidos: Avon Books, 1973.
Lua MLA (9ú heag.)Bach, Richard. Jonathan Livingston Seagull: A Story. Avon Books, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.