Soo Jiuan Tan, et al. “SunTzu on Battlegrounds and Strategies: Seven Propositions for Successful Market Targeting and Penetration Strategies for SMEs”. Asian Academy of Management Journal, vol. 3, no. 1, June 1998, https://ejournal.usm.my/aamj/article/view/aamj_vol3-no-1-1998_6.