APA-referens (7:e uppl.)

Abundo, A. V. (1972). Principles of land reform and taxation. s.n.].

Chicago-referens (17:e uppl.)

Abundo, Alfredo V. Principles of Land Reform and Taxation. [Naga City: s.n.], 1972.

MLA-referens (9:e uppl.)

Abundo, Alfredo V. Principles of Land Reform and Taxation. s.n.], 1972.