APA-čujuhus (7. p.)
Wilbert, W. N. (1980). Teaching Christian adults. Baker Book House.
Chicago-čujuhus (17. p.)
Wilbert, Warren N. Teaching Christian Adults. Grand Rapids, Mich.: Baker Book House, 1980.
MLA-čujuhus (9. p.)
Wilbert, Warren N. Teaching Christian Adults. Baker Book House, 1980.
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