Muliasari, Ade Astri, and Ade Wachjar, Supijatno. 2015. “The Growth of Arabica Coffee (Coffea Arabica L.) Seedling on Combination of Inorganic-Organic Fertilizers and Shading Level”. Asian Journal of Applied Sciences 3 (6). https://www.ajouronline.com/index.php/AJAS/article/view/3275.