VARGAS-RODRIGUEZ , L.M.; HERRERA, J.G.; MORALES, E.J.; ARCOS-GARCIA, J.L.; LOPEZ-POZOS, R.; RUELAS, G. Effect of Citric Acid, Phytase and Calcium in Diets of Laying Hens on Productive Performance, Digestibility and Mineral Excretion. International Journal of Poultry Science, Pakistan, v. 14, n. 4, p. 222–228, 2015. DOI: 10.3923/ijps.2015.222.228. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/2156. Acesso em: 23 sep. 2025.