Cita APA

Sparke, L. S., & Gallagher, J. S. (2013). Galaxies in the universe: An introduction (2. ed., 7. reimpr.). Cambridge: Cambridge University Press.

Citación estilo Chicago

Sparke, Linda Siobhan, y John Sill Gallagher. Galaxies in the Universe: An Introduction. 2. ed., 7. reimpr. Cambridge: Cambridge University Press, 2013.

Cita MLA

Sparke, Linda Siobhan, y John Sill Gallagher. Galaxies in the Universe: An Introduction. 2. ed., 7. reimpr. Cambridge: Cambridge University Press, 2013.