APA (7th ed.) Citation

Li, X., Otsuka, N., & Brigham, L. W. (2021). Spatial and temporal variations of recent shipping along the Northern Sea Route. Polar Science, 27, 100569.

Chicago Style (17th ed.) Citation

Li, Xiaoyang, Natsuhiko Otsuka, and Lawson W. Brigham. "Spatial and Temporal Variations of Recent Shipping Along the Northern Sea Route." Polar Science 27 (2021): 100569.

MLA (9th ed.) Citation

Li, Xiaoyang, et al. "Spatial and Temporal Variations of Recent Shipping Along the Northern Sea Route." Polar Science, vol. 27, 2021, p. 100569.