Mitchell, R. J. (1977). Merit rating in industry and the armed services [microform]. Photoduplication Service. University of the Philippines Library.
Lua i Stíl Chicago (17ú heag.)Mitchell, Robert Jouett. Merit Rating in Industry and the Armed Services [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Lua MLA (9ú heag.)Mitchell, Robert Jouett. Merit Rating in Industry and the Armed Services [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.