Cita APA (7a ed.)

Foote, H. United States policy towards El Salvador: September 1979-to the present. Washington Office.

Cita Chicago Style (17a ed.)

Foote, Heather. United States Policy Towards El Salvador: September 1979-to the Present. Washington: Washington Office.

Cita MLA (9a ed.)

Foote, Heather. United States Policy Towards El Salvador: September 1979-to the Present. Washington Office.

警告：这些引文格式不一定是100％准确.