APA-referens (7:e uppl.)

De Guzman, G. G. (1977). The use of alphabeticall listed frame in stratified sampling design [microform]. Photoduplication Service. University of the Philippines Library.

Chicago-referens (17:e uppl.)

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.

MLA-referens (9:e uppl.)

De Guzman, Generoso G. The Use of Alphabeticall Listed Frame in Stratified Sampling Design [microform]. Photoduplication Service. University of the Philippines Library, 1977.