PARKER, J. (2001). Emma's problem.-- ed.1. McGraw-Hill Interamericana.
Chicago-čujuhus (17. p.)PARKER, John. Emma's Problem.-- Ed.1. Mexico: McGraw-Hill Interamericana, 2001.
MLA-čujuhus (9. p.)PARKER, John. Emma's Problem.-- Ed.1. McGraw-Hill Interamericana, 2001.
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