Utama
- http://journal.unnes.ac.id/nju/index.php/JPFI/issue/archive
- https://journals.aps.org/prper/issues
- http://www2.phy.ilstu.edu/~wenning/jpteo/
- http://www.tused.org/internet/tused/default13.asp
- http://iopscience.iop.org
- http://www.highbeam.com
- http://infotrac.galegroup.com/itweb/username
- http://journal.um.ac.id/index.php/jip/issue/archi
Tambahan:
