Derman, Derman, dkk. “RANCANG BANGUN PAKAN IKAN OTOMATIS TENAGA SURYA BERBASIS PROGRAMMABLE LOGIC CONTROLLER”. Jurnal Pengembangan Rekayasa dan Teknologi, vol. 2, no. 2, November 2018, hlm. 55-62, https://doi.org/10.26623/jprt.v14i2.1228.