Sonaiya, E. B., & Swan, S. (2004). Manual Small-scale poultry production:technical guide: No 1.
Cita Chicago (17th ed.)Sonaiya, E. B., i S.E.J Swan. Manual Small-scale Poultry Production:technical Guide: No 1. 2004.
Cita MLA (9th ed.)Sonaiya, E. B., i S.E.J Swan. Manual Small-scale Poultry Production:technical Guide: No 1. 2004.
Atenció: Aquestes cites poden no estar 100% correctes.