APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.