Besas, Ulysses, Larry Aceres, and Sinneth Caniones. 2020. “Potential of Vermicompost Drippings and Other Vermicomposting Products on the Growth and Yield of Lettuce”. Southeastern Philippines Journal of Research and Development 25 (1), 33-46. https://journal.usep.edu.ph/index.php/Southeastern_Philippines_Journal/article/view/66.