Schweingruber, F. H. (2007). Tree-ring chronology of Pinus nigra (Black pine) compiled from tree samples PLAN. PANGAEA.
Citazione stile Chigago Style (17a edizione)Schweingruber, Fritz Hans. Tree-ring Chronology of Pinus Nigra (Black Pine) Compiled from Tree Samples PLAN. PANGAEA, 2007.
Citatione MLA (9a ed.)Schweingruber, Fritz Hans. Tree-ring Chronology of Pinus Nigra (Black Pine) Compiled from Tree Samples PLAN. PANGAEA, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.