Cita APA (7a ed.)
(1993). The wetlands of Central and Eastern Europe. IUCN.
Cita Chicago Style (17a ed.)
The Wetlands of Central and Eastern Europe. Gland: IUCN, 1993.
Cita MLA (9a ed.)
The Wetlands of Central and Eastern Europe. IUCN, 1993.
Precaución: Estas citas no son 100% exactas.