APA
WHO, . (1990). Guidelines for nursing management of people infected with human immunodeficincy virus (HIV). Geneva: World Health Organization.
Chicago
WHO, . 1990. Guidelines for nursing management of people infected with human immunodeficincy virus (HIV). Geneva: World Health Organization.
Harvard
WHO, . (1990). Guidelines for nursing management of people infected with human immunodeficincy virus (HIV). Geneva: World Health Organization.
MLA
WHO, . Guidelines for nursing management of people infected with human immunodeficincy virus (HIV). Geneva: World Health Organization. 1990.