Cita APA (7a ed.)

Hale, G. E. (1915). Ten years of a mountain observatory. Carnegie Co..

Cita Chicago Style (17a ed.)

Hale, George Ellery. Ten Years of a Mountain Observatory. Washington: Carnegie Co., 1915.

Cita MLA (8a ed.)

Hale, George Ellery. Ten Years of a Mountain Observatory. Carnegie Co., 1915.