Alarilla, L. M. (1965). The colored rods in the teaching of arithmetic in grades. IN Alarilla, Luis M. [column]. Education Quarterly.
Chicago Style aipamenaAlarilla, Luis M. "The Colored Rods in the Teaching of Arithmetic in Grades. IN Alarilla, Luis M. [column]." Education Quarterly 1965.
MLA aipamenaAlarilla, Luis M. "The Colored Rods in the Teaching of Arithmetic in Grades. IN Alarilla, Luis M. [column]." Education Quarterly, 1965.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.