APA (7th ed.) Citation

PC, T., BC, E., & GM, H. (2013). Cryptic or mystic? Glacial tree refugia in northern Europe. Trends in ecology & evolution, 28(12), 696. https://doi.org/10.1016/j.tree.2013.09.001

Chicago Style (17th ed.) Citation

PC, Tzedakis, Emerson BC, and Hewitt GM. "Cryptic or Mystic? Glacial Tree Refugia in Northern Europe." Trends in Ecology & Evolution 28, no. 12 (2013): 696. https://doi.org/10.1016/j.tree.2013.09.001.

MLA (9th ed.) Citation

PC, Tzedakis, et al. "Cryptic or Mystic? Glacial Tree Refugia in Northern Europe." Trends in Ecology & Evolution, vol. 28, no. 12, 2013, p. 696, https://doi.org/10.1016/j.tree.2013.09.001.