Call, L. E. (1956). The College of Agriculture and Central Experiment Station, University of the Philippines, January 27, 1951 to December 31, 1955: Progress report. International Cooperation Administration, United States of America Operations Mission to the Philippines.
Lua i Stíl Chicago (17ú heag.)Call, Leland E. The College of Agriculture and Central Experiment Station, University of the Philippines, January 27, 1951 to December 31, 1955: Progress Report. Manila: International Cooperation Administration, United States of America Operations Mission to the Philippines, 1956.
Lua MLA (9ú heag.)Call, Leland E. The College of Agriculture and Central Experiment Station, University of the Philippines, January 27, 1951 to December 31, 1955: Progress Report. International Cooperation Administration, United States of America Operations Mission to the Philippines, 1956.