Παραπομπή σε μορφή APA (7η εκδ.)
Aggidis D. (1997). Soil Characteristics of a Winter Wheat Field Located in the Problematic Area of Ptolemaida Plains, in Greece.
Παραπομπή σε μορφή Chicago (17η εκδ.)
Aggidis D. Soil Characteristics of a Winter Wheat Field Located in the Problematic Area of Ptolemaida Plains, in Greece. 1997.
Παραπομπή σε μορφή MLA (9th εκδ.)
Aggidis D. Soil Characteristics of a Winter Wheat Field Located in the Problematic Area of Ptolemaida Plains, in Greece. 1997.
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