APA Edition Citation

Barthold, P. E., Burton, W. B., & Pfenniger, D. (1992). The Galactic interstellar medium.

Chicago Edition Citation

Barthold, P; Ed, W B. Burton, and D. Pfenniger. The Galactic Interstellar Medium. Berlin, Springer Verlag, 1992.

MLA Edition Citation

Barthold, P; Ed, et al. The Galactic Interstellar Medium. 1992.