APA (7th ed.) Citation

Dick, G. F., & Dick, G. H. (1938). Scarlet fever. Year Book Publ.

Chicago Style (17th ed.) Citation

Dick, George Frederick, and Gladys Henry Dick. Scarlet Fever. Chicago, Ill: Year Book Publ, 1938.

MLA (9th ed.) Citation

Dick, George Frederick, and Gladys Henry Dick. Scarlet Fever. Year Book Publ, 1938.