Abundo, A. V. (1973). Principles of land reform and taxation (2nd ed.). s.n.
Cita Chicago (17th ed.)Abundo, Alfredo V. Principles of Land Reform and Taxation. 2nd ed. [Naga City: s.n, 1973.
Cita MLA (9th ed.)Abundo, Alfredo V. Principles of Land Reform and Taxation. 2nd ed. s.n, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.