Ionization structure of the nebula NGC 6857.

MLA

Kondrat’eva, L., et al. “Ionization Structure of the Nebula NGC 6857.” Astronomy Letters, vol. 40, no. 11, Nov. 2014, pp. 704–12. EBSCOhost, https://doi.org/10.1134/S1063773714110024.

APA

Kondrat’eva, L., Rspaev, F., & Aimuratov, E. (2014). Ionization structure of the nebula NGC 6857. Astronomy Letters, 40(11), 704–712. https://doi.org/10.1134/S1063773714110024

Chicago

Kondrat’eva, L., F. Rspaev, and E. Aimuratov. 2014. “Ionization Structure of the Nebula NGC 6857.” Astronomy Letters 40 (11): 704–12. doi:10.1134/S1063773714110024.