APA (7th ed.) Citation

(1958). Memorandum, Cumming to The Secretary, Balloon Project, July 29, 1958, Top Secret.

Chicago Style (17th ed.) Citation

Memorandum, Cumming to The Secretary, Balloon Project, July 29, 1958, Top Secret. 1958.

MLA (8th ed.) Citation

Memorandum, Cumming to The Secretary, Balloon Project, July 29, 1958, Top Secret. 1958.

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