APA

Office of the Commonwealth of Puerto Rico Washington D., . (19). The Commonwealth of Puerto Rico. [Washington: Office of the Commonwealth of Puerto Rico.

Chicago

Office of the Commonwealth of Puerto Rico Washington D.C, . 19. The Commonwealth of Puerto Rico. [Washington: Office of the Commonwealth of Puerto Rico.

Harvard

Office of the Commonwealth of Puerto Rico Washington D., . (19). The Commonwealth of Puerto Rico. [Washington: Office of the Commonwealth of Puerto Rico.

MLA

Office of the Commonwealth of Puerto Rico Washington D.C, . The Commonwealth of Puerto Rico. [Washington: Office of the Commonwealth of Puerto Rico. 19.