Searching for Comets by Louis Brewer Hall 1990 McGraw Hill Publishing.

Comets Creators and Destroyers by David H. Levy 1998 Touchstone Book Published by Simon and Schuster

"Documentary Fire from the Sky" from The Discovery Channel

Robert Burnham's Great Comets (ISBN 0521646006 Paperback) 1947-2000

Quest for Comets

Comets, Asteroids, and Meteorites by Time Life

Cosmic Pinball: The science of Comets, Meteors, and Asteroids by Carolyn Summers/Carlton Alan

Falling Stars: A Guide to Meteors & Meteorites by Mike D. Reynolds

Terrestrial Impact Craters

Longest Visibility of Ancient Comets

The Bright Comet Chronicles

Future Comets

Cometography

50 Comets