Gonzales, E. G., & Robledo-Gonzales, C. M. (1979). National Internal Revenue Code: With annotations and implementing regulations (1979 rev. ed.). Rex Book Store.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGonzales, Epifanio G., और Celestina M. Robledo-Gonzales. National Internal Revenue Code: With Annotations and Implementing Regulations. 1979 rev. ed. Manila, Philippines: Rex Book Store, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGonzales, Epifanio G., और Celestina M. Robledo-Gonzales. National Internal Revenue Code: With Annotations and Implementing Regulations. 1979 rev. ed. Rex Book Store, 1979.
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