In Chicago style, the bibliography page should be double-spaced, with the same spacing within and between citations. Either use the hanging-indentation function on your word processor or format each entry like a normal paragraph with a first-line indent.
Citations beginning with names and those beginning with titles are to be alphabetized together. Numbers in titles are treated as though they have been spelled out. For names, alphabetize based on the letters that come before the comma separating the last name from the first, and disregard any spaces or other punctuation in the last name. For titles, ignore articles such as "a" and "the" (and equivalents in other languages) for alphabetization purposes.
The bibliography may contain works that you do not cite in the body of your paper. Newspaper articles are often omitted from the bibliography; personal communications with the author are generally omitted as well. In these cases, a citation note should be included in the body of the paper.
Two or three authors (or editors) of the same work are listed in the order in which they appear with the source. In the bibliography only the first author's name is inverted, and a comma must appear both before and after the first author's given name or initials. Use the conjunction and (not an ampersand). For works by or edited by four to ten persons, all names are usually given in the bibliography. In a note, only the name of the first author is included,followed by et al. with no intervening comma. For works with more than ten authors--more common in the natural scienes--Chicago recommends only the first seven should be listed in the bibliography, followed by et al.