APA (7th ed.) Citation

Leys, N. M., & Tawney, R. H. Letter and two post cards, 7 July, 4 Aug., 22 Aug. 1941.

Chicago Style (17th ed.) Citation

Leys, Norman Maclean, and R. H. Tawney. Letter and Two Post Cards, 7 July, 4 Aug., 22 Aug. 1941.

MLA (8th ed.) Citation

Leys, Norman Maclean, and R. H. Tawney. Letter and Two Post Cards, 7 July, 4 Aug., 22 Aug. 1941.

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