Walton , R. (1989). The Encyclopaedia of forms and precedents (5.). Butter worth London.
Chicago-čujuhus (17. p.)Walton , Raymond. The Encyclopaedia of Forms and Precedents. 5. London: Butter worth London, 1989.
MLA-čujuhus (9. p.)Walton , Raymond. The Encyclopaedia of Forms and Precedents. 5. Butter worth London, 1989.
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