Cita APA (7a ed.)

Schweingruber, F. H., & Häfliger, M. (2007). Tree-ring measurements of Picea glauca (White spruce) from sample SIMPSUFE-62. PANGAEA.

Cita Chicago Style (17a ed.)

Schweingruber, Fritz Hans, y Martin Häfliger. Tree-ring Measurements of Picea Glauca (White Spruce) from Sample SIMPSUFE-62. PANGAEA, 2007.

Cita MLA (9a ed.)

Schweingruber, Fritz Hans, y Martin Häfliger. Tree-ring Measurements of Picea Glauca (White Spruce) from Sample SIMPSUFE-62. PANGAEA, 2007.