Παραπομπή APA

(1994). International classification of goods and services: For the purposes of the registration of marks (6th ed.). WIPO.

Παραπομπή Chicago Style

International Classification of Goods and Services: For the Purposes of the Registration of Marks. 6th ed. Geneva: WIPO, 1994.

Παραπομπή MLA

International Classification of Goods and Services: For the Purposes of the Registration of Marks. 6th ed. WIPO, 1994.