Cite
Effects of seed source origin on bark thickness of Douglas-fir ( Pseudotsuga menziesii) growing in southwestern Germany.
MLA
Kohnle, Ulrich, et al. “Effects of Seed Source Origin on Bark Thickness of Douglas-Fir ( Pseudotsuga Menziesii) Growing in Southwestern Germany.” Canadian Journal of Forest Research, vol. 42, no. 2, Feb. 2012, pp. 382–99. EBSCOhost, https://doi.org/10.1139/x11-191.
APA
Kohnle, U., Hein, S., Sorensen, F. C., & Weiskittel, A. R. (2012). Effects of seed source origin on bark thickness of Douglas-fir ( Pseudotsuga menziesii) growing in southwestern Germany. Canadian Journal of Forest Research, 42(2), 382–399. https://doi.org/10.1139/x11-191
Chicago
Kohnle, Ulrich, Sebastian Hein, Frank C. Sorensen, and Aaron R. Weiskittel. 2012. “Effects of Seed Source Origin on Bark Thickness of Douglas-Fir ( Pseudotsuga Menziesii) Growing in Southwestern Germany.” Canadian Journal of Forest Research 42 (2): 382–99. doi:10.1139/x11-191.