APA (7th ed.) Citation

Witherow, G. A. (1940). United States foreign trade in 1939. Commerce Reports, p139.

Chicago Style (17th ed.) Citation

Witherow, G. A. "United States Foreign Trade in 1939." Commerce Reports 1940: p139.

MLA (9th ed.) Citation

Witherow, G. A. "United States Foreign Trade in 1939." Commerce Reports, 1940, p. p139.

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