APA-viite

Seeds, M. a. B. (2014). Universe: Solar systems, stars, and galaxies (8.).

Chicago-tyylinen lähdeviittaus

Seeds, Michael and Backman. Universe: Solar Systems, Stars, and Galaxies. 8. Cengage learning, 2014.

MLA-viite

Seeds, Michael and Backman. Universe: Solar Systems, Stars, and Galaxies. 8. 2014.