Gruba, L. K. (2019). A survey of the amendments introduced by TRAIN Law (R.A. 10963) to the National Internal Revenue Code of 1997. Rex Book Store.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGruba, Lily K. A Survey of the Amendments Introduced by TRAIN Law (R.A. 10963) to the National Internal Revenue Code of 1997. Manila: Rex Book Store, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGruba, Lily K. A Survey of the Amendments Introduced by TRAIN Law (R.A. 10963) to the National Internal Revenue Code of 1997. Rex Book Store, 2019.
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