Echols, J. R. (1977). Donors and developers in population communication. East-West Center.
Lua i Stíl Chicago (17ú heag.)Echols, James R. Donors and Developers in Population Communication. Honolulu: East-West Center, 1977.
Lua MLA (9ú heag.)Echols, James R. Donors and Developers in Population Communication. East-West Center, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.