Bucaoto, A. P. (1972). Paper folding: An instructional device in the teaching of geometry.
Lua i Stíl Chicago (17ú heag.)Bucaoto, Avelino P. Paper Folding: An Instructional Device in the Teaching of Geometry. Quezon City, 1972.
Lua MLA (9ú heag.)Bucaoto, Avelino P. Paper Folding: An Instructional Device in the Teaching of Geometry. 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.