Khoirani, K., Indrawati, A. and Setiyaningsih, S. 2019. Detection of Ampicillin Resistance Encoding Gene of Escherichia coli from Chickens in Bandung and Purwakarta. Jurnal Riset Veteriner Indonesia (Journal of The Indonesian Veterinary Research). 3, 1 (Jul. 2019). DOI:https://doi.org/10.20956/jrvi.v3i1.6134.