Schweingruber, F. H. (2007). Tree-ring measurements of Picea obovata (Sibirean spruce) from sample KOTUJUPC-242. PANGAEA.
Citazione stile Chigago Style (17a edizione)Schweingruber, Fritz Hans. Tree-ring Measurements of Picea Obovata (Sibirean Spruce) from Sample KOTUJUPC-242. PANGAEA, 2007.
Citatione MLA (9a ed.)Schweingruber, Fritz Hans. Tree-ring Measurements of Picea Obovata (Sibirean Spruce) from Sample KOTUJUPC-242. PANGAEA, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.