Cita APA (7a ed.)

Schweingruber, F. H., & Frei, S. (2007). Tree-ring measurements of Pinus sylvestris (Scotch pine) from sample CHARPISY-491. PANGAEA.

Cita Chicago Style (17a ed.)

Schweingruber, Fritz Hans, y Sybille Frei. Tree-ring Measurements of Pinus Sylvestris (Scotch Pine) from Sample CHARPISY-491. PANGAEA, 2007.

Cita MLA (9a ed.)

Schweingruber, Fritz Hans, y Sybille Frei. Tree-ring Measurements of Pinus Sylvestris (Scotch Pine) from Sample CHARPISY-491. PANGAEA, 2007.