Gaya APA

SMIDT, G, A. et al (2011). Heavy metal concentrations in solis in the vicinity of a fertilizer factory in Southern Brazil . Hamburg-Germany: vTI.

Gaya MLA

SMIDT, Geerd, A.. et al. "Heavy metal concentrations in solis in the vicinity of a fertilizer factory in Southern Brazil". Hamburg-Germany: vTI, 2011. Artikel.