APA (7th ed.) Citation

Hopkins, E. S., & Elder, F. B. (1951). The practice of sanitation. Williams & Wilkins.

Chicago Style (17th ed.) Citation

Hopkins, Edward Scott, and Francis B. Elder. The Practice of Sanitation. Baltimore: Williams & Wilkins, 1951.

MLA (9th ed.) Citation

Hopkins, Edward Scott, and Francis B. Elder. The Practice of Sanitation. Williams & Wilkins, 1951.