APA (7th ed.) Citation

Furlong, W. R., McCandless, B., & Langley, H. D. (1981). So proudly we hail: The history of the United States flag. Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Furlong, William Rea, Byron McCandless, and Harold D. Langley. So Proudly We Hail: The History of the United States Flag. Washington, D.C.: Smithsonian Institution Press, 1981.

MLA (9th ed.) Citation

Furlong, William Rea, et al. So Proudly We Hail: The History of the United States Flag. Smithsonian Institution Press, 1981.