Cita APA (7a ed.)

World Healt Organization International programs on Chemical Safety IPCS. (1997). Nitrogen oxides (2ª ed.). WHO.

Cita Chicago Style (17a ed.)

World Healt Organization International programs on Chemical Safety IPCS. Nitrogen Oxides. 2ª ed. Geneva: WHO, 1997.

Cita MLA (8a ed.)

World Healt Organization International programs on Chemical Safety IPCS. Nitrogen Oxides. 2ª ed. WHO, 1997.