APA (7th ed.) Zitazioa

Otterspeer, W. (2008). The Bastion of Liberty: Leiden University Today and Yesterday. Leiden University Press.

Chicago Style (17th ed.) Zitazioa

Otterspeer, Willem. The Bastion of Liberty: Leiden University Today and Yesterday. Leiden University Press, 2008.

MLA (9th ed.) Zitazioa

Otterspeer, Willem. The Bastion of Liberty: Leiden University Today and Yesterday. Leiden University Press, 2008.