APA-referens (7:e uppl.)

Moore, P. (1977). Guide to comets (Completely revised and new ed.). Lutterworth Press.

Chicago-referens (17:e uppl.)

Moore, Patrick. Guide to Comets. Completely revised and new ed. Guildford: Lutterworth Press, 1977.

MLA-referens (8:e uppl.)

Moore, Patrick. Guide to Comets. Completely revised and new ed. Lutterworth Press, 1977.