Samanian, Mosayyeb, AND 		Khosropanah, Akram.
"A Study Of The Application Of Marketing Practices In The Provision Of The Information Services Based On 4Ps Marketing Mix Model. Case Study: Academic Libraries In North Khorasan Province" <em>Qualitative and Quantitative Methods in Libraries</em> [Online], Volume 5 Number 4 (27 April 2017)