Gaya APA

YUSUF, M. et al (2016). Risk factors influencing conception rate in holstein heifers before artifical insemination or embryo transfer . Bogor: Bogor Agricultural University (IPB).

Gaya MLA

YUSUF, M. et al. "Risk factors influencing conception rate in holstein heifers before artifical insemination or embryo transfer". Bogor: Bogor Agricultural University (IPB), 2016. Artikel.