Brace, J., Bass, S. C., White, R. R., & Anne Brace. (1977). Teaching conservation in developing nations. U.S. Government Printing Office.
Lua i Stíl Chicago (17ú heag.)Brace, Judith, Stephen C. Bass, Ralph R. White, agus Anne Brace. Teaching Conservation in Developing Nations. Washington, D.C: U.S. Government Printing Office, 1977.
Lua MLA (9ú heag.)Brace, Judith, et al. Teaching Conservation in Developing Nations. U.S. Government Printing Office, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.