APA (7th ed.) Citation

Nilsson, K., & Heidt, J. (2001). Host galaxies of RGB BL Lacertae objects. The NOT in the 2000's.

Chicago Style (17th ed.) Citation

Nilsson, Kari, and Jochen Heidt. "Host Galaxies of RGB BL Lacertae Objects." The NOT in the 2000's 2001.

MLA (9th ed.) Citation

Nilsson, Kari, and Jochen Heidt. "Host Galaxies of RGB BL Lacertae Objects." The NOT in the 2000's, 2001.

Warning: These citations may not always be 100% accurate.