APA
Niebuhr H. R., Niebuhr R. R. e., . (1989). Faith on earth. New Haven, CT: Yale University Press.
Chicago
Niebuhr H Richard, Niebuhr Richard R ed, . 1989. Faith on earth. New Haven, CT: Yale University Press.
Harvard
Niebuhr H. R., Niebuhr R. R. e., . (1989). Faith on earth. New Haven, CT: Yale University Press.
MLA
Niebuhr H Richard, Niebuhr Richard R ed, . Faith on earth. New Haven, CT: Yale University Press. 1989.