Crown architecture of Populus clones as determined by branch orientation and branch characteristics.

MLA

Ceulemans, Reinhart, et al. “Crown Architecture of Populus Clones as Determined by Branch Orientation and Branch Characteristics.” Tree Physiology, vol. 7, no. 1_2_3_4, Dec. 1990, pp. 157–67. EBSCOhost, https://doi.org/10.1093/treephys/7.1-2-3-4.157.

APA

Ceulemans, R., Stettler, R. F., Hinckley, T. M., Isebrands, J. G., & Heilman, P. E. (1990). Crown architecture of Populus clones as determined by branch orientation and branch characteristics. Tree Physiology, 7(1_2_3_4), 157–167. https://doi.org/10.1093/treephys/7.1-2-3-4.157

Chicago

Ceulemans, Reinhart, R. F. Stettler, T. M. Hinckley, J. G. Isebrands, and P. E. Heilman. 1990. “Crown Architecture of Populus Clones as Determined by Branch Orientation and Branch Characteristics.” Tree Physiology 7 (1_2_3_4): 157–67. doi:10.1093/treephys/7.1-2-3-4.157.