APA (7th ed.) Citation

Gapultos, S. M., Barredo, L. S., & Mamangun, M. C. (1968). Tax primers (questions and answers) and additional valuable tax information (amended and revised revenue regulations, etc.). s.n.].

Chicago Style (17th ed.) Citation

Gapultos, Santiago M., Lorenzo S. Barredo, and Marina C. Mamangun. Tax Primers (questions and Answers) and Additional Valuable Tax Information (amended and Revised Revenue Regulations, Etc.). [Quezon City: s.n.], 1968.

MLA (9th ed.) Citation

Gapultos, Santiago M., et al. Tax Primers (questions and Answers) and Additional Valuable Tax Information (amended and Revised Revenue Regulations, Etc.). s.n.], 1968.