APA (7 ম সংস্করণ) উদ্ধৃতি

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.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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.