APA-referens

Hester, J. (2007). 21st Century Astronomy Stars and Galaxies. McGraw Hill Companies Inc.

Chicago-stil citat

Hester, Jeff. 21st Century Astronomy Stars and Galaxies. McGraw Hill Companies Inc, 2007.

MLA-referens

Hester, Jeff. 21st Century Astronomy Stars and Galaxies. McGraw Hill Companies Inc, 2007.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.