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.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGapultos, Santiago M., Lorenzo S. Barredo, और Marina C. Mamangun. Tax Primers (questions and Answers) and Additional Valuable Tax Information (amended and Revised Revenue Regulations, Etc.). [Quezon City: s.n.], 1968.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGapultos, Santiago M., et al. Tax Primers (questions and Answers) and Additional Valuable Tax Information (amended and Revised Revenue Regulations, Etc.). s.n.], 1968.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.