APA-referens

Spaan, W. P. (1979). Course instruction: Soil conservation and erosion control. Wageningen: Wageningen Agricultural Univ.

Chicago-stil citat

Spaan, W. P. Course Instruction: Soil Conservation and Erosion Control. Wageningen: Wageningen Agricultural Univ, 1979.

MLA-referens

Spaan, W. P. Course Instruction: Soil Conservation and Erosion Control. Wageningen: Wageningen Agricultural Univ, 1979.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.