APA (7th ed.) Citation

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.) Citation

Kniazev, 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.) Citation

Kniazev, 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.