Cita APA

Hopkins, E. S., Bingley, W. M., & Schucker, G. W. (1970). The practice of sanitation in its relation to the environment. Williams & Wilkins.

Citación estilo Chicago

Hopkins, Edward Scott, W. McLean Bingley, and George Wayne Schucker. The Practice of Sanitation in Its Relation to the Environment. Baltimore: Williams & Wilkins, 1970.

Cita MLA

Hopkins, Edward Scott, et al. The Practice of Sanitation in Its Relation to the Environment. Williams & Wilkins, 1970.