APA-viite (7. p.)

Osterbrock, D. E. (1997). Yerkes Observatory, 1892-1950: The birth, near death, and resurrection of a scientific research institution. University of Chicago Press.

Chicago-viite (17. p.)

Osterbrock, Donald E. Yerkes Observatory, 1892-1950: The Birth, Near Death, and Resurrection of a Scientific Research Institution. Chicago: University of Chicago Press, 1997.

MLA-viite (9. p.)

Osterbrock, Donald E. Yerkes Observatory, 1892-1950: The Birth, Near Death, and Resurrection of a Scientific Research Institution. University of Chicago Press, 1997.