APA-čujuhus (7. p.)
Christensen Jens. (1977). The practical approach to muslims (ed.).
Chicago-čujuhus (17. p.)
Christensen Jens. The Practical Approach to Muslims. ed. 1977.
MLA-čujuhus (9. p.)
Christensen Jens. The Practical Approach to Muslims. ed. 1977.
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