Kniazev, A. Y., & Grebel, E. K. (2006). Spectroscopy of PNe in Sextans A, Sextans B, NGC 3109 and Fornax. Planetary nebulae beyond the milky way. https://doi.org/10.1007/11604792_40
Chicago Style (17th ed.) CitationKniazev, Alexei Y., and Eva K. Grebel. "Spectroscopy of PNe in Sextans A, Sextans B, NGC 3109 and Fornax." Planetary Nebulae Beyond the Milky Way 2006. https://doi.org/10.1007/11604792_40.
MLA (9th ed.) CitationKniazev, Alexei Y., and Eva K. Grebel. "Spectroscopy of PNe in Sextans A, Sextans B, NGC 3109 and Fornax." Planetary Nebulae Beyond the Milky Way, 2006, https://doi.org/10.1007/11604792_40.
Warning: These citations may not always be 100% accurate.