Schweingruber, F. H., & Brunner, M. (2007). Tree-ring measurements of Abies amabilis (Pacific silver fir) from sample HELENS-121. PANGAEA.
Citazione stile Chigago Style (17a edizione)Schweingruber, Fritz Hans, e Margrit Brunner. Tree-ring Measurements of Abies Amabilis (Pacific Silver Fir) from Sample HELENS-121. PANGAEA, 2007.
Citatione MLA (9a ed.)Schweingruber, Fritz Hans, e Margrit Brunner. Tree-ring Measurements of Abies Amabilis (Pacific Silver Fir) from Sample HELENS-121. PANGAEA, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.