Cita APA (7a ed.)

Bleyer, H. (2007). Tree-ring width of Picea abies (Karsten) from historical object sample IB20857-7. PANGAEA.

Cita Chicago Style (17a ed.)

Bleyer, Hans-Jürgen. Tree-ring Width of Picea Abies (Karsten) from Historical Object Sample IB20857-7. PANGAEA, 2007.

Cita MLA (9a ed.)

Bleyer, Hans-Jürgen. Tree-ring Width of Picea Abies (Karsten) from Historical Object Sample IB20857-7. PANGAEA, 2007.