Petschek, P. (2008). Grading for Landscape Architects and Architects. Birkhauser Verlag AG.
Čikaški stil citiranja (17. izdanje)Petschek, Peter. Grading for Landscape Architects and Architects. Birkhauser Verlag AG, 2008.
MLA način citiranja (8. izdanje)Petschek, Peter. Grading for Landscape Architects and Architects. Birkhauser Verlag AG, 2008.
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