APA aipamena

World Health Organization. Regional Office for Europe. (1974). Communicable diseases. [s.n.].

Chicago Style aipamena

World Health Organization. Regional Office for Europe. Communicable Diseases. Copenhagen: [s.n.], 1974.

MLA aipamena

World Health Organization. Regional Office for Europe. Communicable Diseases. [s.n.], 1974.