Mumtahanah, Z. N., B. Kristanto, and F. Kusmiyati. “Biological Agent’s Effectiveness for Control of Diamondback Moth Larvae (Plutella Xylostella Linn) With Different Population Levels on Lettuce”. Journal of Tropical Crop Science and Technology, vol. 2, no. 2, Oct. 2020, pp. 93-104, doi:10.22219/jtcst.v2i2.10526.