Penn, C. J., & Bowen, J. M. (2020). Design and Construction of Phosphorus Removal Structures for Improving Water Quality. 1st ed. 2018. Springer International Publishing.
Παραπομπή Chicago StylePenn, Chad J., και James M. Bowen. Design and Construction of Phosphorus Removal Structures for Improving Water Quality. 1st Ed. 2018. Springer International Publishing, 2020.
Παραπομπή MLAPenn, Chad J., και James M. Bowen. Design and Construction of Phosphorus Removal Structures for Improving Water Quality. 1st Ed. 2018. Springer International Publishing, 2020.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.