APA (7th ed.) Citation

Schweingruber, F. H. (2007). Tree-ring chronology of Picea engelmannii (Engelmann spruce) compiled from tree samples POWDER. PANGAEA.

Chicago Style (17th ed.) Citation

Schweingruber, Fritz Hans. Tree-ring Chronology of Picea Engelmannii (Engelmann Spruce) Compiled from Tree Samples POWDER. PANGAEA, 2007.

MLA (9th ed.) Citation

Schweingruber, Fritz Hans. Tree-ring Chronology of Picea Engelmannii (Engelmann Spruce) Compiled from Tree Samples POWDER. PANGAEA, 2007.

Warning: These citations may not always be 100% accurate.