APA-čujuhus (7. p.)
Niebuhr, H. R., & Niebuhr, R. R. (1989). Faith on earth: An inquiry into the structure of human faith. Yale University Press.
Chicago-čujuhus (17. p.)
Niebuhr, H. Richard, juo Richard R. Niebuhr. Faith on Earth: An Inquiry into the Structure of Human Faith. New Haven, CT: Yale University Press, 1989.
MLA-čujuhus (9. p.)
Niebuhr, H. Richard, juo Richard R. Niebuhr. Faith on Earth: An Inquiry into the Structure of Human Faith. Yale University Press, 1989.
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