Lua APA (7ú heag.)

(1997). Roberto F. de Ocampo: Personifying world class excellence in public service. Manila Bulletin.

Lua i Stíl Chicago (17ú heag.)

"Roberto F. De Ocampo: Personifying World Class Excellence in Public Service." Manila Bulletin 1997.

Lua MLA (9ú heag.)

"Roberto F. De Ocampo: Personifying World Class Excellence in Public Service." Manila Bulletin, 1997.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.