Cita APA

Comstock, G. C. (1901). A text-book of astronomy. New York: D. Appleton and company.

Citación estilo Chicago

Comstock, George Cary. A Text-book of Astronomy. New York: D. Appleton and company, 1901.

Cita MLA

Comstock, George Cary. A Text-book of Astronomy. New York: D. Appleton and company, 1901.

Precaución: Estas citas no son 100% exactas.