Cita APA (7a ed.)

Schweingruber, F. H., & Brunner, M. (2007). Tree-ring measurements of Abies amabilis (Pacific silver fir) from sample HELENS-82. PANGAEA.

Cita Chicago Style (17a ed.)

Schweingruber, Fritz Hans, y Margrit Brunner. Tree-ring Measurements of Abies Amabilis (Pacific Silver Fir) from Sample HELENS-82. PANGAEA, 2007.

Cita MLA (9a ed.)

Schweingruber, Fritz Hans, y Margrit Brunner. Tree-ring Measurements of Abies Amabilis (Pacific Silver Fir) from Sample HELENS-82. PANGAEA, 2007.