Style de citation APA (7e éd.)

Gregory, D. D. (1972). Standing to sue in environmental litigation in the United States of America. IUCN.

Style de citation Chicago (17e éd.)

Gregory, David D. Standing to Sue in Environmental Litigation in the United States of America. Morges: IUCN, 1972.

Style de citation MLA (9e éd.)

Gregory, David D. Standing to Sue in Environmental Litigation in the United States of America. IUCN, 1972.