Cita APA (7a ed.)
Holdgate, M. (1999). The green web: A union for world conservation. Earthscan Publications Ltd..
Cita Chicago Style (17a ed.)
Holdgate, Martín. The Green Web: A Union for World Conservation. London: Earthscan Publications Ltd., 1999.
Cita MLA (9a ed.)
Holdgate, Martín. The Green Web: A Union for World Conservation. Earthscan Publications Ltd., 1999.
Precaución: Estas citas no son 100% exactas.