Cita APA (7th ed.)

Friis Robert H. (2019). Essentials of Environmental Health: Essential Public Health (2nd ed.). Jones & Bartlett Learning.

Cita Chicago (17th ed.)

Friis Robert H. Essentials of Environmental Health: Essential Public Health. 2nd ed. Massachusetts: Jones & Bartlett Learning, 2019.

Cita MLA (9th ed.)

Friis Robert H. Essentials of Environmental Health: Essential Public Health. 2nd ed. Jones & Bartlett Learning, 2019.