Marn, J. T. K., C. W. Hin, and A. M. Bohari. “Antecedents of Strategic Planning of SMEs in Malaysia: The Influence of Ownership Motivations and Environmental Uncertainty”. International Review of Management and Marketing, vol. 6, no. 7S, Oct. 2016, pp. 270-6, https://www.econjournals.com/index.php/irmm/article/view/3266.