Citazione Stile APA (7a Edizione)

U.S. Agency for International Development. (1990). List of rgistered PVO's with USAID. June 1.

Citazione stile Chigago Style (17a edizione)

U.S. Agency for International Development. List of Rgistered PVO's with USAID. Manila: June 1, 1990.

Citatione MLA (9a ed.)

U.S. Agency for International Development. List of Rgistered PVO's with USAID. June 1, 1990.