The ABA's practical guide to legal ethics... The ABA Center for Professional Responsibility has developed a practical guide to the basics of professional conduct for the legal assistant. The Legal Assistant's Practical Guide to Professional Responsibility reviews the ethical issues that are relevant to you and offers guidance that can be adapted to practice in any jurisdiction.
...specifically for legal assistants
Prepared with the help of representatives from the American Association for Paralegal Education, the National Association of Legal Assistants, Inc. and the National Federation of Paralegal Associations, Inc., the book offers expert advice on ethical standards for legal assistants, secretaries, and other employees of law firms, corporations, and law-related organizations.