APA (7th ed.) Citation

Peterken, T. (2020). Excavating the fossil record of spiral galaxies.

Chicago Style (17th ed.) Citation

Peterken, Thomas. Excavating the Fossil Record of Spiral Galaxies. 2020.

MLA (9th ed.) Citation

Peterken, Thomas. Excavating the Fossil Record of Spiral Galaxies. 2020.

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