APA

Weltorganisation für Geistiges Eigentum, . (2009). Word intellectual property indicators. Geneva, Switzerland: World Intellectual Property Organization.

Chicago

Weltorganisation für Geistiges Eigentum, . 2009. Word intellectual property indicators. Geneva, Switzerland: World Intellectual Property Organization.

Harvard

Weltorganisation für Geistiges Eigentum, . (2009). Word intellectual property indicators. Geneva, Switzerland: World Intellectual Property Organization.

MLA

Weltorganisation für Geistiges Eigentum, . Word intellectual property indicators. Geneva, Switzerland: World Intellectual Property Organization. 2009.