एपीए उद्धरण

Ad Olsthoorn. (1998). Soil acidification effects on fine root growth of Douglas-fir on sandy soils. The Netherland: Wageningen University.

शिकागो स्टाइल उद्धरण

Ad Olsthoorn. Soil Acidification Effects On Fine Root Growth of Douglas-fir On Sandy Soils. The Netherland: Wageningen University, 1998.

एमएलए उद्धरण

Ad Olsthoorn. Soil Acidification Effects On Fine Root Growth of Douglas-fir On Sandy Soils. The Netherland: Wageningen University, 1998.