Não informado. (2004). Holland Shipping and Trading. Van Kouteren's Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Holland Shipping and Trading. Rotterdam, Holanda: Van Kouteren's Publishing, 2004.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Holland Shipping and Trading. Van Kouteren's Publishing, 2004.
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