Puerto, M. D. (1988). The effect of contest on the pupil's achievement in mathematics among the grade V pupils of Claveria District, Division of Masbate SY 1987-1988.
Lua i Stíl Chicago (17ú heag.)Puerto, Marianito D. The Effect of Contest on the Pupil's Achievement in Mathematics Among the Grade V Pupils of Claveria District, Division of Masbate SY 1987-1988. 1988.
Lua MLA (9ú heag.)Puerto, Marianito D. The Effect of Contest on the Pupil's Achievement in Mathematics Among the Grade V Pupils of Claveria District, Division of Masbate SY 1987-1988. 1988.
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