Yap, D. M. (1947). Citizenship manual. s.n.].
Chicago Style (17th ed.) CitationYap, Diosdado M. Citizenship Manual. [Washington, D.C: s.n.], 1947.
MLA (9th ed.) CitationYap, Diosdado M. Citizenship Manual. s.n.], 1947.
Warning: These citations may not always be 100% accurate.