PETERSON ROGER TONY. (1985). BIRDS. TIME LIFE BOOKS.
Lua i Stíl Chicago (17ú heag.)PETERSON ROGER TONY. BIRDS. HONGKONG: TIME LIFE BOOKS, 1985.
Lua MLA (9ú heag.)PETERSON ROGER TONY. BIRDS. TIME LIFE BOOKS, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.