APA

Puerto Rico, . (199). The Communications infrastructure of Puerto Rico. [Hato Rey, P.R.?: Commonwealth of Puerto Rico, Economic Development Administration?.

Chicago

Puerto Rico, . 199. The Communications infrastructure of Puerto Rico. [Hato Rey, P.R.?: Commonwealth of Puerto Rico, Economic Development Administration?.

Harvard

Puerto Rico, . (199). The Communications infrastructure of Puerto Rico. [Hato Rey, P.R.?: Commonwealth of Puerto Rico, Economic Development Administration?.

MLA

Puerto Rico, . The Communications infrastructure of Puerto Rico. [Hato Rey, P.R.?: Commonwealth of Puerto Rico, Economic Development Administration?. 199.