APA aipamena

Sykes, J. (2005). Intellectual property in designs. LexixNexis.

Chicago Style aipamena

Sykes, John. Intellectual Property in Designs. Edinburgh: LexixNexis, 2005.

MLA aipamena

Sykes, John. Intellectual Property in Designs. LexixNexis, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.