Alfred Sherwood Romer, T. S. P. The vertebrate body. Saunders College Publishing.
Lua i Stíl Chicago (17ú heag.)Alfred Sherwood Romer, Thomas S. Parsons. The Vertebrate Body. Saunders College Publishing.
Lua MLA (8ú heag.)Alfred Sherwood Romer, Thomas S. Parsons. The Vertebrate Body. Saunders College Publishing.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.