Cita APA

(1981). U.S. foreign trade statistics: Classifications and cross-classifications, 1980.

Citación estilo Chicago

U.S. Foreign Trade Statistics: Classifications and Cross-classifications, 1980. 1981.

Cita MLA

U.S. Foreign Trade Statistics: Classifications and Cross-classifications, 1980. 1981.

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