Friedrich, M. (2007). Tree-ring width of Pinus sylvestris (von Linné) from historical object sample HOH3344-2528. PANGAEA.
Citazione stile Chigago Style (17a edizione)Friedrich, Michael. Tree-ring Width of Pinus Sylvestris (von Linné) from Historical Object Sample HOH3344-2528. PANGAEA, 2007.
Citatione MLA (9a ed.)Friedrich, Michael. Tree-ring Width of Pinus Sylvestris (von Linné) from Historical Object Sample HOH3344-2528. PANGAEA, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.