Putra, A. P., Fahmi, I. and Wibisono, Y. (2015) “COMPETITIVE STRATEGY OF A MARKET LEADER; CASE OF UD. PRIMADONA’S PROL TAPE JEMBER - EAST JAVA”, Indonesian Journal of Business and Entrepreneurship (IJBE), 1(3), p. 127. doi: 10.17358/ijbe.1.3.127.