Dyfyniad APA

Castillo, J. B. (1966). Some factors affecting achievement in elementary science. s.n.].

Dyfyniad Arddull Chicago

Castillo, Jovito B. Some Factors Affecting Achievement in Elementary Science. [Quezon City: s.n.], 1966.

Dyfyniad MLA

Castillo, Jovito B. Some Factors Affecting Achievement in Elementary Science. s.n.], 1966.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.