APA (7th ed.) Citation

Maryland State Department of Health. (1931). Whooping cough in Maryland. [χ. ό.].

Chicago Style (17th ed.) Citation

Maryland State Department of Health. Whooping Cough in Maryland. Baltimore: [χ. ό.], 1931.

MLA (8th ed.) Citation

Maryland State Department of Health. Whooping Cough in Maryland. [χ. ό.], 1931.

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