APA

St. John C. W., . (1930). Porto Rican neighbors. New York: Friendship Press.

Chicago

St. John Charles Webster, . 1930. Porto Rican neighbors. New York: Friendship Press.

Harvard

St. John C. W., . (1930). Porto Rican neighbors. New York: Friendship Press.

MLA

St. John Charles Webster, . Porto Rican neighbors. New York: Friendship Press. 1930.