Veenstra, A. W. (1999). Quantitative analysis of shipping markets =: Kwantitatieve analyse van Scheepvaartmarkten. Delft University Press.
Lua i Stíl Chicago (17ú heag.)Veenstra, Albert Willem. Quantitative Analysis of Shipping Markets =: Kwantitatieve Analyse Van Scheepvaartmarkten. Delft: Delft University Press, 1999.
Lua MLA (8ú heag.)Veenstra, Albert Willem. Quantitative Analysis of Shipping Markets =: Kwantitatieve Analyse Van Scheepvaartmarkten. Delft University Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.