If you were writing a bibliography/works cited page, how would you write one for a book if there are three authors?

Question

This is what I think:
Davidson, James West et al., eds. The American Nation(underlined). (city: publisher, year).

But is the et al., eds part right???

Clancy, Tom, Carl Stiner, and Tony Koltz. Shadow Warriors: Inside the Special Forces(underlined). New York: Putnam, 2002.

thanks!