APA (7th ed.) Citation

Netopil, M., Paunzen, E., & Maitzen, H. M. (Extra) galactic stellar aggregates.

Chicago Style (17th ed.) Citation

Netopil, M., E. Paunzen, and H. M. Maitzen. (Extra) Galactic Stellar Aggregates.

MLA (9th ed.) Citation

Netopil, M., et al. (Extra) Galactic Stellar Aggregates.

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