Tecson, G. R. (2011). Trends in grades, UP School of Economics. School of Economics, University of the Philippines.
Cita Chicago (17th ed.)Tecson, Gwendolyn R. Trends in Grades, UP School of Economics. Quezon City: School of Economics, University of the Philippines, 2011.
Cita MLA (9th ed.)Tecson, Gwendolyn R. Trends in Grades, UP School of Economics. School of Economics, University of the Philippines, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.