Ander-Egg, E. (1997). El desafio ecologico (2. ed.). San Jose (Costa Rica): EUNED.
Chicago Style CitationAnder-Egg, E. El Desafio Ecologico. 2. ed. San Jose (Costa Rica): EUNED, 1997.
MLA CitationAnder-Egg, E. El Desafio Ecologico. 2. ed. San Jose (Costa Rica): EUNED, 1997.
Warning: These citations may not always be 100% accurate.