APA aipamena

Spellman, F. R., & Drinan, J. E. (2001). The handbook for waterworks operator certification. Technomic.

Chicago Style aipamena

Spellman, Frank R., and Joanne E. Drinan. The Handbook for Waterworks Operator Certification. Lancaster, Penn: Technomic, 2001.

MLA aipamena

Spellman, Frank R., and Joanne E. Drinan. The Handbook for Waterworks Operator Certification. Technomic, 2001.