Harya, SP., M.Agr DGI, Soedarto, M.P. PDIT, Hendrarini, M.Si PDIH. Standar Mutu Dan Sertifikasi Produk Ekspor Komoditas Perkebunan. PT. Ghani Press Group; 2026. Accessed July 22, 2026. https://e-book.ghanipress.com/index.php/ghanipress/catalog/book/55