APA

The WHO Study Group on the Functions of Hospitals at the First Referral Level, . (1992). The hospital in rural and urban districts. Geneva, Switzerland: World Health Organization.

Chicago

The WHO Study Group on the Functions of Hospitals at the First Referral Level, . 1992. The hospital in rural and urban districts. Geneva, Switzerland: World Health Organization.

Harvard

The WHO Study Group on the Functions of Hospitals at the First Referral Level, . (1992). The hospital in rural and urban districts. Geneva, Switzerland: World Health Organization.

MLA

The WHO Study Group on the Functions of Hospitals at the First Referral Level, . The hospital in rural and urban districts. Geneva, Switzerland: World Health Organization. 1992.