APA (7th ed.) Citation

Osterbrock, D. E. (1995). Walter Baade, Observational Astrophysicist, (1): The Preparation 1893–1931.

Chicago Style (17th ed.) Citation

Osterbrock, Donald E. Walter Baade, Observational Astrophysicist, (1): The Preparation 1893–1931. 1995.

MLA (9th ed.) Citation

Osterbrock, Donald E. Walter Baade, Observational Astrophysicist, (1): The Preparation 1893–1931. 1995.

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