Cita APA (7a ed.)
Gregory, D. D. (1972). Standing to sue in environmental litigation in the United States of America. IUCN.
Cita Chicago Style (17a ed.)
Gregory, David D. Standing to Sue in Environmental Litigation in the United States of America. Morges: IUCN, 1972.
Cita MLA (9a ed.)
Gregory, David D. Standing to Sue in Environmental Litigation in the United States of America. IUCN, 1972.
Precaución: Estas citas no son 100% exactas.