Sekolah Tinggi Agama Islam Negeri (STAIN) Tulungagung,
Majalah, Jurnal, Buletin
Ross, Alf
Longmans, Green , 1947
Buku Teks
Fawcett, Joe
John Wiley & Sons, 2012
Buku Teks
Fraser, Barry J., editor
Springer, 2012
eBooks
Jones, Alan J.
Departement of Industry Technology and Commerce, 1990
Buku Teks