Horton, R. E. (1928). Measurable outcomes of individual laboratory work in high school chemistry. Teachers college, Columbia university.
Dyfyniad Arddull ChicagoHorton, Ralph Ellison. Measurable Outcomes of Individual Laboratory Work in High School Chemistry. New York city: Teachers college, Columbia university, 1928.
Dyfyniad MLAHorton, Ralph Ellison. Measurable Outcomes of Individual Laboratory Work in High School Chemistry. Teachers college, Columbia university, 1928.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.