Cite
Diffuse Ionized Gas in M51/NGC 5195 and M81
MLA
Greenawalt, B., et al. “Diffuse Ionized Gas in M51/NGC 5195 and M81.” The Astrophysical Journal, vol. 506, no. 1, Oct. 1998, pp. 135–51. EBSCOhost, https://doi.org/10.1086/306232.
APA
Greenawalt, B., Walterbos, R. A. M., Thilker, D., & Hoopes, C. G. (1998). Diffuse Ionized Gas in M51/NGC 5195 and M81. The Astrophysical Journal, 506(1), 135–151. https://doi.org/10.1086/306232
Chicago
Greenawalt, B., R. A. M. Walterbos, D. Thilker, and C. G. Hoopes. 1998. “Diffuse Ionized Gas in M51/NGC 5195 and M81.” The Astrophysical Journal 506 (1): 135–51. doi:10.1086/306232.