Ringqvist, L. (2000). Peat as a metal trap for wastewater. Swedish University of Agricultural Sciences.
Chicago-referens (17:e uppl.)Ringqvist, Lena. Peat as a Metal Trap for Wastewater. Umeå: Swedish University of Agricultural Sciences, 2000.
MLA-referens (8:e uppl.)Ringqvist, Lena. Peat as a Metal Trap for Wastewater. Swedish University of Agricultural Sciences, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.