APA (7th ed.) Citation

Costa Rica & United States. (1990). Finance: Agreement between the United States of America and Costa Rica, signed at Washington and San Jose May 18, 1990 ; entered into force May 18, 1990 with letter of understanding. United States Department of State.

Chicago Style (17th ed.) Citation

Costa Rica and United States. Finance: Agreement Between the United States of America and Costa Rica, Signed at Washington and San Jose May 18, 1990 ; Entered into Force May 18, 1990 with Letter of Understanding. [Washington, D.C.]: United States Department of State, 1990.

MLA (9th ed.) Citation

Costa Rica and United States. Finance: Agreement Between the United States of America and Costa Rica, Signed at Washington and San Jose May 18, 1990 ; Entered into Force May 18, 1990 with Letter of Understanding. United States Department of State, 1990.