NC, Ehirim, Osuji EE, Tim-Ashama AC, Essien UA, Eze EU, Praise CN, and Anyanwu UG. 2022. “Economic Efficiency of Processed Hibiscus Sabdanriffa (Roselle) Drink in Imo State, Nigeria”. World Scientific Research 9 (1):20-26. https://doi.org/10.20448/wsr.v9i1.3970.