Bucaoto, A. P. (1972). Paper folding: An instructional device in the teaching of geometry.
Chicago-referens (17:e uppl.)Bucaoto, Avelino P. Paper Folding: An Instructional Device in the Teaching of Geometry. Quezon City, 1972.
MLA-referens (9:e uppl.)Bucaoto, Avelino P. Paper Folding: An Instructional Device in the Teaching of Geometry. 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.