APA

United States, . (1987). Financial audit: Government Nationa [sic] National Mortgage Association's financial statements for 1986. [Washington, D.C: .

Chicago

United States, . 1987. Financial audit: Government Nationa [sic] National Mortgage Association's financial statements for 1986. [Washington, D.C: .

Harvard

United States, . (1987). Financial audit: Government Nationa [sic] National Mortgage Association's financial statements for 1986. [Washington, D.C: .

MLA

United States, . Financial audit: Government Nationa [sic] National Mortgage Association's financial statements for 1986. [Washington, D.C: . 1987.