APA (7th ed.) Citation

Howe, D. J., & Stammers, M. (1995). Doctor Who companions. Doctor Who Books.

Chicago Style (17th ed.) Citation

Howe, David J., and Mark Stammers. Doctor Who Companions. London: Doctor Who Books, 1995.

MLA (9th ed.) Citation

Howe, David J., and Mark Stammers. Doctor Who Companions. Doctor Who Books, 1995.