Cita APA

Spellman, F. R., & Welsh, K. (2018). Safe work practices for wastewater treatment plants (Third edition.). CRC Press.

Chicago Edition Citation

Spellman, Frank R., i Kathern Welsh. Safe Work Practices for Wastewater Treatment Plants. Third edition. London: CRC Press, 2018.

Cita MLA

Spellman, Frank R., i Kathern Welsh. Safe Work Practices for Wastewater Treatment Plants. Third edition. CRC Press, 2018.