Oktavia, Fetrina. 2020. “KERAGAAN 215 PROGENI F1 TANAMAN KARET HASIL PERSILANGAN 2011-2012 DI PENGUJIAN SEMAIAN”. Jurnal Penelitian Karet 2 (38):107-20. https://doi.org/10.22302/ppk.jpk.v2i38.732.