Siegert, L. (2011). Sustainable development approaches in the food and beverage industry: A comparison between nestl©♭ SA and Kraft Foods Inc. Anchor Academic Publishing.
Lua i Stíl Chicago (17ú heag.)Siegert, Lars. Sustainable Development Approaches in the Food and Beverage Industry: A Comparison Between Nestl©♭ SA and Kraft Foods Inc. Hamburg, Germany: Anchor Academic Publishing, 2011.
Lua MLA (9ú heag.)Siegert, Lars. Sustainable Development Approaches in the Food and Beverage Industry: A Comparison Between Nestl©♭ SA and Kraft Foods Inc. Anchor Academic Publishing, 2011.
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