APA-referens (7:e uppl.)

Abundo, A. V. (1973). Principles of land reform and taxation (2nd ed.). s.n.

Chicago-referens (17:e uppl.)

Abundo, Alfredo V. Principles of Land Reform and Taxation. 2nd ed. [Naga City: s.n, 1973.

MLA-referens (9:e uppl.)

Abundo, Alfredo V. Principles of Land Reform and Taxation. 2nd ed. s.n, 1973.