{{cite journal | last1=Ferreira | first1=J. C. P. | author2=Ian | author3=Martin | author4=C. R. Irikura | author5=L. U. Gimenes | author6=C. J. Fujiraha | author7=A. M. Jorge | author8=E. Oba | year=2012 | title=ULTRASONOGRAPHIC MONITORING OF EARLY PREGNANCY DEVELOPMENT IN MURRAH BUFFALO HEIFERS (BUBALUS BUBALIS) | journal=Journal of Animal and Plant Sciences | volume=22 | issue=3 | pages=377-383 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2012-JAPS-3051}}