Schweingruber, F. H., & Conkey, L. (2007). Tree-ring measurements of Picea rubens (Red spruce) from sample SUGA-192. PANGAEA.
Citazione stile Chigago Style (17a edizione)Schweingruber, Fritz Hans, e Laura Conkey. Tree-ring Measurements of Picea Rubens (Red Spruce) from Sample SUGA-192. PANGAEA, 2007.
Citatione MLA (9a ed.)Schweingruber, Fritz Hans, e Laura Conkey. Tree-ring Measurements of Picea Rubens (Red Spruce) from Sample SUGA-192. PANGAEA, 2007.
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