APA
Szyszczak Erika, Cygan Adam, . (2008). Understanding European Union law. London: Sweet & Maxwell.
Chicago
Szyszczak Erika, Cygan Adam, . 2008. Understanding European Union law. London: Sweet & Maxwell.
Harvard
Szyszczak Erika, Cygan Adam, . (2008). Understanding European Union law. London: Sweet & Maxwell.
MLA
Szyszczak Erika, Cygan Adam, . Understanding European Union law. London: Sweet & Maxwell. 2008.