Miftakhurrohmat , A., and F. Y. Nur Jannah. “The Effects of PGR Soaking Treatment and Cow Manure Fertilizer Dosage On Corn (Zea Mays L.) Variety Arjuna Growth and Yield”. Nabatia, Vol. 6, no. 2, Dec. 2018, pp. 63-68, doi:10.21070/nabatia.v6i2.1069.