Schweingruber, F. H., & Sieber, M. (2007). Tree-ring measurements of Pinus sylvestris (Scotch pine) from sample BALLO-31. PANGAEA.
Citazione stile Chigago Style (17a edizione)Schweingruber, Fritz Hans, e Margret Sieber. Tree-ring Measurements of Pinus Sylvestris (Scotch Pine) from Sample BALLO-31. PANGAEA, 2007.
Citatione MLA (9a ed.)Schweingruber, Fritz Hans, e Margret Sieber. Tree-ring Measurements of Pinus Sylvestris (Scotch Pine) from Sample BALLO-31. PANGAEA, 2007.
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