APA

Wells H., . (1969). The modernization of Puerto Rico: a political study of changing values and institutions / Henry Wells. Cambridge, Mass: Harvard University Press.

Chicago

Wells Henry, . 1969. The modernization of Puerto Rico: a political study of changing values and institutions / Henry Wells. Cambridge, Mass: Harvard University Press.

Harvard

Wells H., . (1969). The modernization of Puerto Rico: a political study of changing values and institutions / Henry Wells. Cambridge, Mass: Harvard University Press.

MLA

Wells Henry, . The modernization of Puerto Rico: a political study of changing values and institutions / Henry Wells. Cambridge, Mass: Harvard University Press. 1969.