Laporan Praktek produktifitas di PT. Petrokimia Gresik BAB III

Daftar Pustaka :

file:///C:/Users/ASUS%20CORE%20I3/Downloads/Eko%20Andriani%204386%202010.pdf

file:///C:/Users/ASUS%20CORE%20I3/Downloads/Nindita%20Kurnia%20Putri%204376%202010%20(1).pdf

http://digilib.its.ac.id/public/ITS-Undergraduate-13866-2505100003-Presentation.pdf

http://petrokimia-gresik.com/News/PG-Upayakan-Tingkatkan-Produktivitas-Padi

http://satria-nurcahya.blogspot.co.id/2013/07/laporan-kkl-pt-petrokimia-gresik.html