Rusfidra, et al. “Flock Composition, Effective Population Size and Inbreeding Rate of Kokok Balenggek Chicken Breed under In-Situ Conservation”. International Journal of Poultry Science, vol. 14, no. 2, Jan. 2015, pp. 117–119, https://doi.org/10.3923/ijps.2015.117.119.