APA

Puerto Rico, . (19). Preliminary state health plan. San Juan, P.R: Department od Health.

Chicago

Puerto Rico, . 19. Preliminary state health plan. San Juan, P.R: Department od Health.

Harvard

Puerto Rico, . (19). Preliminary state health plan. San Juan, P.R: Department od Health.

MLA

Puerto Rico, . Preliminary state health plan. San Juan, P.R: Department od Health. 19.