Gaya APA

BARROS, C, P., ATHANASSIOU, M. (2004). Efficiency in European seaports with DEA: evidence from greece and Portugal . United Kingdom: Elsevier.

Gaya MLA

BARROS, CARLOS, PESTANA., ATHANASSIOU, MANOLIS. "Efficiency in European seaports with DEA: evidence from greece and Portugal". United Kingdom: Elsevier, 2004. Article.