National Beautification and Cleanliness Committee. Content Committee. (1967). National beautification and cleanliness campaign: General information. s.n.
Chicago Style aipamenaNational Beautification and Cleanliness Committee. Content Committee. National Beautification and Cleanliness Campaign: General Information. [Manila: s.n, 1967.
MLA aipamenaNational Beautification and Cleanliness Committee. Content Committee. National Beautification and Cleanliness Campaign: General Information. s.n, 1967.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.