While Robert's Rules of Order Newly Revised (10th ed. 2000) is by far the most widely used parliamentary authority, other authorities exist. These include:

(1) Demeter's Manual of Parliamentary Law and Procedure (1969). Shorter than Robert's Rules, but not widely used. An interesting feature is a final chapter on "The Greatest Convention Every Held," which contains an account of the biblical Creation. The 1969 edition is a revision of the original 1953 work.

(2) Riddick's Rules of Procedure (1985). The work of Floyd Riddick, former parliamentarian of the United States Senate. His work consists of an alphabetical list of parliamentary phrases rather than a systematic body of parliamentary procedure, and is of little use to persons with limited familiarity with parliamentary procedure.

(3) The Standard Code of Parliamentary Procedure. A parliamentary authority written by Alice Sturgis in 1950. The current edition (2001) was written by the American Institute of Parliamentarians. Its main objective is to provide a parliamentary authority that is simpler and more up-to-date than Robert's Rules. Its cover contains the following quote from former American Institute of Parliamentarians president Leo Athans: "Anyone who has trouble with Robert's Rules of Order will welcome the simplicity of this streamlined guide to parliamentary procedure." The Standard Code of Parliamentary Procedure is the second most widely used parliamentary authority in the United States.