Lua APA (7ú heag.)

Rixen, C. (2002). Artificial snow and snow additives on ski pistes: Interactions between snow cover, soil and vegetation. Universität Zürich.

Lua i Stíl Chicago (17ú heag.)

Rixen, Christian. Artificial Snow and Snow Additives on Ski Pistes: Interactions Between Snow Cover, Soil and Vegetation. Switzerland: Universität Zürich, 2002.

Lua MLA (8ú heag.)

Rixen, Christian. Artificial Snow and Snow Additives on Ski Pistes: Interactions Between Snow Cover, Soil and Vegetation. Universität Zürich, 2002.

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