Gaya APA
Hafidhuddin, D., Tanjung, H. (2006).
Shariah Principles On Management In Practice .
Jakarta:
Gema Insani.
Gaya MLA
Hafidhuddin, Didin., Tanjung, Hendri.
"Shariah Principles On Management In Practice".
Jakarta:
Gema Insani,
2006.
Koleksi Elektronik.