United States. Weather Bureau. (1930). Instructions for making aerological observations by means of kites, airplanes, sounding balloons, limited-height sounding balloons, free-rising captive balloons, ceiling balloons. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Weather Bureau. Instructions for Making Aerological Observations by Means of Kites, Airplanes, Sounding Balloons, Limited-height Sounding Balloons, Free-rising Captive Balloons, Ceiling Balloons. Washington: U.S. GPO, 1930.
MLA (9th ed.) CitationUnited States. Weather Bureau. Instructions for Making Aerological Observations by Means of Kites, Airplanes, Sounding Balloons, Limited-height Sounding Balloons, Free-rising Captive Balloons, Ceiling Balloons. U.S. GPO, 1930.
Warning: These citations may not always be 100% accurate.