Cita APA

Hach company. (1991). Products for analysis 1991-92. USA: Hach company.

Chicago Style Citation

Hach company. Products for Analysis 1991-92. USA: Hach company, 1991.

Cita MLA

Hach company. Products for Analysis 1991-92. USA: Hach company, 1991.

Atenció: Aquestes cites poden no estar 100% correctes.