APA

United States, . (1978). Maintenance of structures & buildings. [Washington, D.C: .

Chicago

United States, . 1978. Maintenance of structures & buildings. [Washington, D.C: .

Harvard

United States, . (1978). Maintenance of structures & buildings. [Washington, D.C: .

MLA

United States, . Maintenance of structures & buildings. [Washington, D.C: . 1978.