APA (7e ed.) Bronvermelding

Vitug, C. P. (1976). An item-analysis and validity study of the science education center elementary mathematics tests for grades 1, 2, and 3. University of the Philippines Library.

Chicago (17e ed.) Bronvermelding

Vitug, Carolina P. An Item-analysis and Validity Study of the Science Education Center Elementary Mathematics Tests for Grades 1, 2, and 3. Quezon City: University of the Philippines Library, 1976.

MLA (9e ed.) Bronvermelding

Vitug, Carolina P. An Item-analysis and Validity Study of the Science Education Center Elementary Mathematics Tests for Grades 1, 2, and 3. University of the Philippines Library, 1976.