APA-čujuhus (7. p.)
Engstrom, T. W. (1982). The pursuit of excellence. Zondervan Pub. House.
Chicago-čujuhus (17. p.)
Engstrom, Theodore Wilhelm. The Pursuit of Excellence. Grand Rapids, Mich.: Zondervan Pub. House, 1982.
MLA-čujuhus (9. p.)
Engstrom, Theodore Wilhelm. The Pursuit of Excellence. Zondervan Pub. House, 1982.
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