-, Hafizah -, Bunga - Adity, Hermansyur - -, and Iskandar - Muda. 2019. “Understanding of Contruct Indicators Forming Dimensions of Business Strategy and Customer Relationship Management in Industry Revolution 4.0”. Ecoforum Journal 8 (2). https://ecoforumjournal.ro/index.php/eco/article/view/2066.