APA (7th ed.) Citation

United States. Bureau of Foreign and Domestic Commerce. (1931). Air services in Europe, Africa, and Australia. GPO.

Chicago Style (17th ed.) Citation

United States. Bureau of Foreign and Domestic Commerce. Air Services in Europe, Africa, and Australia. [Washington]: GPO, 1931.

MLA (9th ed.) Citation

United States. Bureau of Foreign and Domestic Commerce. Air Services in Europe, Africa, and Australia. GPO, 1931.

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