APA (7th ed.) Citation

Butts, R. (2019). Astronomical Tracts. Adam Matthew Digital.

Chicago Style (17th ed.) Citation

Butts, Robert. Astronomical Tracts. Marlborough, Wiltshire: Adam Matthew Digital, 2019.

MLA (9th ed.) Citation

Butts, Robert. Astronomical Tracts. Adam Matthew Digital, 2019.

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