Cita APA (7th ed.)

Parthum, C. A., & Leffel, R. E. (1993). Odor control for wastewater facilities. Water Pollution Federation.

Cita Chicago (17th ed.)

Parthum, Charles A., i R. Ernest Leffel. Odor Control for Wastewater Facilities. Alexandría: Water Pollution Federation, 1993.

Cita MLA (9th ed.)

Parthum, Charles A., i R. Ernest Leffel. Odor Control for Wastewater Facilities. Water Pollution Federation, 1993.