APA

Van Middeldyk R. A., . (1975). The history of Puerto Rico. New York: D. Arno Press.

Chicago

Van Middeldyk Rudolph Adams, . 1975. The history of Puerto Rico. New York: D. Arno Press.

Harvard

Van Middeldyk R. A., . (1975). The history of Puerto Rico. New York: D. Arno Press.

MLA

Van Middeldyk Rudolph Adams, . The history of Puerto Rico. New York: D. Arno Press. 1975.