Excellent site for finding professional codes, guides to writing codes of ethics, bibliography of additional sources and more

Code from APA

From the University of Colorado at Boulder, this website provides access to codes of ethics for U.S. companies and trade and professional associations, ethics sites at college and university business programs.

From the National Academy of Engineering; codes from many professional societies in both Spanish and English

by Chris MacDonald, phd. Tips and Guidelines on how to write a code of ethics. Links to essays on codes of ethics; suggested book references.