APA

United States, . (1973). Index of materials, parts and appliances certified under technical standard order system. [Washington, D.C: .

Chicago

United States, . 1973. Index of materials, parts and appliances certified under technical standard order system. [Washington, D.C: .

Harvard

United States, . (1973). Index of materials, parts and appliances certified under technical standard order system. [Washington, D.C: .

MLA

United States, . Index of materials, parts and appliances certified under technical standard order system. [Washington, D.C: . 1973.