Style de citation APA (7e éd.)

(1988). Nature conservation in the socialist countries of East Europe (2d. ed.). IUCN.

Style de citation Chicago (17e éd.)

Nature Conservation in the Socialist Countries of East Europe. 2d. ed. Praha: IUCN, 1988.

Style de citation MLA (9e éd.)

Nature Conservation in the Socialist Countries of East Europe. 2d. ed. IUCN, 1988.