Asri, M., and A. Antonius N. Heveadi. “PRICE EARNINGS RATIO (PER) MODEL CONSISTENCY: EVIDENCE FROM JAKARTA STOCK EXCHANGE”. Gadjah Mada International Journal of Business, Vol. 1, no. 2, Aug. 2018, pp. 85-97, https://journal.ugm.ac.id/v3/gamaijb/article/view/13792.