Jumari IF, Astutiningsih SE. Implementation of 9P Marketing Mix Strategy in Order to Increase Sales Volume in Abdul Ghoffar Rejotangan Tulungagung’s Koi Fish Farming Business. ijjm [Internet]. 2022Apr.30 [cited 2024Apr.27];3(2):203-21. Available from: https://www.ilomata.org/index.php/ijjm/article/view/447