APA (7th ed.) Citation

Perry, T. O. (1971). Dormancy of trees in winter. Science, 171, 29. https://doi.org/10.1126/science.171.3966.29

Chicago Style (17th ed.) Citation

Perry, T. O. "Dormancy of Trees in Winter." Science 171 (1971): 29. https://doi.org/10.1126/science.171.3966.29.

MLA (9th ed.) Citation

Perry, T. O. "Dormancy of Trees in Winter." Science, vol. 171, 1971, p. 29, https://doi.org/10.1126/science.171.3966.29.