APA (7th ed.) Citation

(1957). Memorandum, Berding to Cumming, June 14, 1957, Top Secret.

Chicago Style (17th ed.) Citation

Memorandum, Berding to Cumming, June 14, 1957, Top Secret. 1957.

MLA (8th ed.) Citation

Memorandum, Berding to Cumming, June 14, 1957, Top Secret. 1957.

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