Cita APA

(1971). U.S. foreign trade statistics: Classifications and cross-classifications, 1970.

Citación estilo Chicago

U.S. Foreign Trade Statistics: Classifications and Cross-classifications, 1970. 1971.

Cita MLA

U.S. Foreign Trade Statistics: Classifications and Cross-classifications, 1970. 1971.

Warning: These citations may not always be 100% accurate.