{{cite journal | last1=Khan | first1=Rafay Ahmed | author2=Muhammad Tariq Javed | author3=Arooj Fatima | author4=Muhammad Zahid Iqbal | author5=Saima Naveed | author6=Muhammad Naveed-Ul-Haque | author7=Khalid Abdul Majeed | author8=Muhammad Ahmad | author9=Nisar Ahmad | author10=Ghazanfar Ali Chishti | year=2025 | title=EFFECT OF FEEDING UREA ON DIGESTIBILITY, BEHAVIOUR, PLASMA UREA NITROGEN, AND GROWTH PERFORMANCE OF WEANED HOLSTEIN DAIRY CALVES | journal=Journal of Animal and Plant Sciences | volume=35 | issue=2 | pages=561-567 | doi=10.36899/JAPS.2025.2.0046 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2024-JAPS-1738}}