APA (7th ed.) Citation

United States. Post Office Department. (1930). Air mail service to French Guiana and Brazil. GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. Air Mail Service to French Guiana and Brazil. [Washington]: GPO, 1930.

MLA (9th ed.) Citation

United States. Post Office Department. Air Mail Service to French Guiana and Brazil. GPO, 1930.

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