Cita APA (7a ed.)

Schweingruber, F. H. (2007). Tree-ring chronology of Picea obovata (Sibirean spruce) compiled from tree samples NOJAPCOB. PANGAEA.

Cita Chicago Style (17a ed.)

Schweingruber, Fritz Hans. Tree-ring Chronology of Picea Obovata (Sibirean Spruce) Compiled from Tree Samples NOJAPCOB. PANGAEA, 2007.

Cita MLA (9a ed.)

Schweingruber, Fritz Hans. Tree-ring Chronology of Picea Obovata (Sibirean Spruce) Compiled from Tree Samples NOJAPCOB. PANGAEA, 2007.