Lua APA (7ú heag.)

Rietkerk, M. (1998). Catastrophic vegetation dynamics and soil degradation in semi-arid grazing systems. s.n..

Lua i Stíl Chicago (17ú heag.)

Rietkerk, Max. Catastrophic Vegetation Dynamics and Soil Degradation in Semi-arid Grazing Systems. [Wageningen: s.n., 1998.

Lua MLA (8ú heag.)

Rietkerk, Max. Catastrophic Vegetation Dynamics and Soil Degradation in Semi-arid Grazing Systems. s.n., 1998.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.