Schouten, W. G. P. (1986). Rearing conditions and behaviour in pigs.
Lua i Stíl Chicago (17ú heag.)Schouten, W. G. P. Rearing Conditions and Behaviour in Pigs. 1986.
Lua MLA (8ú heag.)Schouten, W. G. P. Rearing Conditions and Behaviour in Pigs. 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.