| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Puerto Rico and Puerto Ricans;: Studies in history and society | 978-0-470-54493-8 (0-470-54493-7) | 1974 | |
| Puerto Rico and the Puerto Ricans Studies in History and Society | 978-0-470-54494-5 (0-470-54494-5) | 1975 | Adalberto Lopez · James Petras |