APA

United States, . (19). Change 2, part 45: identification and registration marking. [Washington, D.C: .

Chicago

United States, . 19. Change 2, part 45: identification and registration marking. [Washington, D.C: .

Harvard

United States, . (19). Change 2, part 45: identification and registration marking. [Washington, D.C: .

MLA

United States, . Change 2, part 45: identification and registration marking. [Washington, D.C: . 19.