Suwitono, M. R., J. P. Sahat, J. H. Tobing, and E. V. N. Simatupang. “Growth Hormone Effects in Plantlet Micropropagation of Several Potato (Solanum Tuberosum) Varieties”. Abstract Proceedings International Scholars Conference, vol. 5, no. 1, Oct. 2017, p. 161, doi:10.35974/isc.v5i1.1620.