Cita APA (7th ed.)

Shapely, H. (1960). Sourcebook in astronomy, 1900-1050. Harvard University Press.

Cita Chicago (17th ed.)

Shapely, Harlow. Sourcebook in Astronomy, 1900-1050. Cambridge, MA: Harvard University Press, 1960.

Cita MLA (9th ed.)

Shapely, Harlow. Sourcebook in Astronomy, 1900-1050. Harvard University Press, 1960.