Cita APA (7a ed.)

Safa, H. I. (1974). The urban poor of Puerto Rico: A study in development and inequality. Holt, Rinehart and Winston.

Cita Chicago Style (17a ed.)

Safa, Helen I. The Urban Poor of Puerto Rico: A Study in Development and Inequality. New York [u.a.]: Holt, Rinehart and Winston, 1974.

Cita MLA (9a ed.)

Safa, Helen I. The Urban Poor of Puerto Rico: A Study in Development and Inequality. Holt, Rinehart and Winston, 1974.