Kamande, Regina Wairimu; Kiragu, David Ndung'u; Musumba, George Wamamu(International Journal of Economics, Commerce and Management United Kingdom, 2018-05)
Mwangi, Regina Wambui; Mwenda, Lilian Karimi Mugambi; Wachira, Anita Wanjugu; Kiarie, David Mburu(European Journal of Business and Strategic Management, 2017)