APA (7th ed.) Citation

Yap, D. M. (1947). Citizenship manual. s.n.].

Chicago Style (17th ed.) Citation

Yap, Diosdado M. Citizenship Manual. [Washington, D.C: s.n.], 1947.

MLA (9th ed.) Citation

Yap, Diosdado M. Citizenship Manual. s.n.], 1947.