APA (7th ed.) Citation

Lianou, S. (2011). The interacting M81 group of galaxies.

Chicago Style (17th ed.) Citation

Lianou, Sofia. The Interacting M81 Group of Galaxies. 2011.

MLA (9th ed.) Citation

Lianou, Sofia. The Interacting M81 Group of Galaxies. 2011.

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