APA-čujuhus (7. p.)
Hein, R. (1982). The harmony within: The spiritual vision of George MacDonald. Christian College Consortium.
Chicago-čujuhus (17. p.)
Hein, Rolland. The Harmony Within: The Spiritual Vision of George MacDonald. Mass.: Christian College Consortium, 1982.
MLA-čujuhus (9. p.)
Hein, Rolland. The Harmony Within: The Spiritual Vision of George MacDonald. Christian College Consortium, 1982.
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