APA ציטוט

W.Wesley Eckenfelder. (1981). Sludge Treatment. Marcel Dekker,inc.

Chicago Edition Citation

W.Wesley Eckenfelder. Sludge Treatment. Marcel Dekker,inc, 1981.

ציטוט MLA

W.Wesley Eckenfelder. Sludge Treatment. Marcel Dekker,inc, 1981.