APA ציטוט

Spellman, F. R. (2011). Spellman's Standard handbook for Wastewater operators Vol III (Second.).

Chicago Edition Citation

Spellman, Frank R. Spellman's Standard Handbook for Wastewater Operators Vol III. Second. Florida, CRC Press, 2011.

ציטוט MLA

Spellman, Frank R. Spellman's Standard Handbook for Wastewater Operators Vol III. Second. 2011.