Philippines. Laws, statutes, etc, Lina, A. M., & Sison, J. C. (1975). Tax reforms in the New Society: A complete and up-to-date compilation of decrees, letters of instructions, department orders, revenue regulations and memorandum circulars on internal revenue taxation.

Philippines. Laws, statutes, etc, Ambrosio M. Lina, and Jesus C. Sison. Tax Reforms in the New Society: A Complete and Up-to-date Compilation of Decrees, Letters of Instructions, Department Orders, Revenue Regulations and Memorandum Circulars on Internal Revenue Taxation. n.p, 1975.

Philippines. Laws, statutes, etc, et al. Tax Reforms in the New Society: A Complete and Up-to-date Compilation of Decrees, Letters of Instructions, Department Orders, Revenue Regulations and Memorandum Circulars on Internal Revenue Taxation. 1975.