APA (7th ed.) Citation

Johnson, R. A. (1980). Puerto Rico, commonwealth or colony? Praeger.

Chicago Style (17th ed.) Citation

Johnson, Roberta Ann. Puerto Rico, Commonwealth or Colony? New York, N.Y.: Praeger, 1980.

MLA (9th ed.) Citation

Johnson, Roberta Ann. Puerto Rico, Commonwealth or Colony? Praeger, 1980.