APA

Puerto Rico, . (1959). Organization and functions. [San Juan, P.R.]: Office of Industrial, Labor and Public Relations.

Chicago

Puerto Rico, . 1959. Organization and functions. [San Juan, P.R.]: Office of Industrial, Labor and Public Relations.

Harvard

Puerto Rico, . (1959). Organization and functions. [San Juan, P.R.]: Office of Industrial, Labor and Public Relations.

MLA

Puerto Rico, . Organization and functions. [San Juan, P.R.]: Office of Industrial, Labor and Public Relations. 1959.