Cita APA (7a ed.)

Horan, N. J. (1990). Biological wastewater treatment systems: Theory and operation. John Wiley.

Cita Chicago Style (17a ed.)

Horan, N. J. Biological Wastewater Treatment Systems: Theory and Operation. Chichester: John Wiley, 1990.

Cita MLA (9a ed.)

Horan, N. J. Biological Wastewater Treatment Systems: Theory and Operation. John Wiley, 1990.