Bucaoto, A. P. (1972). Paper folding: An instructional device in the teaching of geometry.
Cita Chicago (17th ed.)Bucaoto, Avelino P. Paper Folding: An Instructional Device in the Teaching of Geometry. Quezon City, 1972.
Cita MLA (9th ed.)Bucaoto, Avelino P. Paper Folding: An Instructional Device in the Teaching of Geometry. 1972.
Atenció: Aquestes cites poden no estar 100% correctes.