Cita APA (7a ed.)
Twentieth Century Fund. (1952). Costa Rica, a study in economic development. s.e..
Cita Chicago Style (17a ed.)
Twentieth Century Fund. Costa Rica, a Study in Economic Development. New York: s.e., 1952.
Cita MLA (9a ed.)
Twentieth Century Fund. Costa Rica, a Study in Economic Development. s.e., 1952.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.