Hoyle, F. (1975). Astronomy and cosmology: A modern course. San Francisco : W H Freeman.
Cita Chicago Style (17a ed.)Hoyle, Fred. Astronomy and Cosmology: A Modern Course. San Francisco : W H Freeman, 1975.
Cita MLA (9a ed.)Hoyle, Fred. Astronomy and Cosmology: A Modern Course. San Francisco : W H Freeman, 1975.
Precaución: Estas citas no son 100% exactas.