Παραπομπή σε μορφή APA (7η εκδ.)

(1971). Manila and suburbs flood control and drainage project: General map showing overall flood control and drainage scheme. [s.n.].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Manila and Suburbs Flood Control and Drainage Project: General Map Showing Overall Flood Control and Drainage Scheme. [Manila]: [s.n.], 1971.

Παραπομπή σε μορφή MLA (9th εκδ.)

Manila and Suburbs Flood Control and Drainage Project: General Map Showing Overall Flood Control and Drainage Scheme. [s.n.], 1971.