Mohd Asri, N.F. et al. 2019. Aplikasi 4P Dalam Pemasaran Buku Ilmiah Bahasa Melayu Oleh Penerbit Universiti Awam Terpilih: 4P Application in Marketing Malay Language Books by Selected Public University Publisher. The Journal of Social Analysis and Sustainability Studies (JSASS). 6, 1 (Jun. 2019), 226–236.