Regala, R., & Philippines Laws, s. (1937). The public service law in brief. University of the Philippines Press.
Lua i Stíl Chicago (17ú heag.)Regala, Roberto, agus statutes Philippines Laws. The Public Service Law in Brief. Manila: University of the Philippines Press, 1937.
Lua MLA (9ú heag.)Regala, Roberto, agus statutes Philippines Laws. The Public Service Law in Brief. University of the Philippines Press, 1937.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.