We assure accuracy in your referencing.
A bibliography is an alphabetized list of all the sources used in the book. This list is found at the end of the work and allows the reader to verify the veracity of the statements and/or figures presented in the essay. It also allows a writer to give proper credit for quotes or key phrases so as to avoid plagiarism.
Using a bibliography to direct your collecting efforts is an excellent way to eliminate guesswork and find new direction. They are your guidebook to the author/subject on which you focus your collecting energies and monies.
A reference list is the detailed list of references that are cited in your work. A bibliography is a detailed list of references cited in your work, plus the background readings or other material that you may have read, but not actually cited.