Schramm, H. (2012). Freight Forwarder's Intermediary Role in Multimodal Transport Chains: A Social Network Approach. Physica-Verlag HD. https://doi.org/10.1007/978-3-7908-2775-0
Lua i Stíl Chicago (17ú heag.)Schramm, Hans-Joachim. Freight Forwarder's Intermediary Role in Multimodal Transport Chains: A Social Network Approach. Heidelberg: Physica-Verlag HD, 2012. https://doi.org/10.1007/978-3-7908-2775-0.
Lua MLA (9ú heag.)Schramm, Hans-Joachim. Freight Forwarder's Intermediary Role in Multimodal Transport Chains: A Social Network Approach. Physica-Verlag HD, 2012. https://doi.org/10.1007/978-3-7908-2775-0.
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