Arico, R. M. (1985). Packaging materials monitoring system Vegoil Phils., Inc. College of Engineering.
Lua i Stíl Chicago (17ú heag.)Arico, Ruby M. Packaging Materials Monitoring System Vegoil Phils., Inc. Diliman, Quezon City: College of Engineering, 1985.
Lua MLA (9ú heag.)Arico, Ruby M. Packaging Materials Monitoring System Vegoil Phils., Inc. College of Engineering, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.