APA aipamena

Pila, J. (2010). On the European Requirement for an Invention.

Chicago Style aipamena

Pila, J. On the European Requirement for an Invention. 2010.

MLA aipamena

Pila, J. On the European Requirement for an Invention. 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.