Manurung, E. Batara, Hermanto Siregar, and Imam Teguh Saptono. 2016. “FACTORS AFFECTING TOBIN’S Q COAL MINING COMPANY REGISTERED IN INDONESIA STOCK EXCHANGE”. Indonesian Journal of Business and Entrepreneurship (IJBE) 2 (2), 130. https://doi.org/10.17358/ijbe.2.2.130.