APA

United States, . (1992). A survey of certified nurse-midwives. Washington, D.C: Department of Health and Human Services, Office of Inspector General.

Chicago

United States, . 1992. A survey of certified nurse-midwives. Washington, D.C: Department of Health and Human Services, Office of Inspector General.

Harvard

United States, . (1992). A survey of certified nurse-midwives. Washington, D.C: Department of Health and Human Services, Office of Inspector General.

MLA

United States, . A survey of certified nurse-midwives. Washington, D.C: Department of Health and Human Services, Office of Inspector General. 1992.