Cita APA (7th ed.)
Grotius, H., Hakluyt, R., Welwood, W., & Armitage, D. (2004). The free sea. Liberty Fund.
Cita Chicago (17th ed.)
Grotius, Hugo, Richard Hakluyt, William Welwood, i David Armitage. The Free Sea. Indianapolis, Ind.: Liberty Fund, 2004.
Cita MLA (9th ed.)
Grotius, Hugo, et al. The Free Sea. Liberty Fund, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.