Sheldon, B., & Birkhead, T. (1994). REPRODUCTIVE ANATOMY OF THE CHAFFINCH IN RELATION TO SPERM COMPETITION.
Lua i Stíl Chicago (17ú heag.)Sheldon, B., agus T. Birkhead. REPRODUCTIVE ANATOMY OF THE CHAFFINCH IN RELATION TO SPERM COMPETITION. 1994.
Lua MLA (9ú heag.)Sheldon, B., agus T. Birkhead. REPRODUCTIVE ANATOMY OF THE CHAFFINCH IN RELATION TO SPERM COMPETITION. 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.