APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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