De Guzman, G. G. (1977). The use of alphabeticall listed frame in stratified sampling design [microform]. Photoduplication Service. University of the Philippines Library.
Lua i Stíl Chicago (17ú heag.)De Guzman, Generoso G. The Use of Alphabeticall Listed Frame in Stratified Sampling Design [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Lua MLA (9ú heag.)De Guzman, Generoso G. The Use of Alphabeticall Listed Frame in Stratified Sampling Design [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.