APA
López Ospina G., . (2004). Toward building a social pact that orients and ensures a sustainable future with solid social protection for all 2005-2050. QuitoEC: UNESCO.
Chicago
López Ospina Gustavo, . 2004. Toward building a social pact that orients and ensures a sustainable future with solid social protection for all 2005-2050. QuitoEC: UNESCO.
Harvard
López Ospina G., . (2004). Toward building a social pact that orients and ensures a sustainable future with solid social protection for all 2005-2050. QuitoEC: UNESCO.
MLA
López Ospina Gustavo, . Toward building a social pact that orients and ensures a sustainable future with solid social protection for all 2005-2050. QuitoEC: UNESCO. 2004.