{{cite journal | last1=Simeon | first1=Rakonjac | author2=Petrovi D. Milun | author3=Bogosavljevi-Boakovi Sne~an | author4=a`krbi Zdenk | author5=a Peri Lidija | author6=Doskovi Vladimir | author7=Petrievi Vesneli | year=2018 | title=EFFECT OF AGE AND SEASON ON PRODUCTION PERFORMANCE AND EGG QUALITY OF LAYING HENS FROM DIFFERENT REARING SYSTEMS | journal=Journal of Animal and Plant Sciences | volume=28 | issue=6 | pages=1602-1608 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2018-JAPS-608}}