APA
O'Brien J. A., . (1948). Truths men live by : a philosophy of religion and life. New York: Macmillan Company.
Chicago
O'Brien John A, . 1948. Truths men live by : a philosophy of religion and life. New York: Macmillan Company.
Harvard
O'Brien J. A., . (1948). Truths men live by : a philosophy of religion and life. New York: Macmillan Company.
MLA
O'Brien John A, . Truths men live by : a philosophy of religion and life. New York: Macmillan Company. 1948.
