From the U.S. Small Business Administration, this website provides detailed information about what to include in a business plan and how to start and manage a business. To access information on business plans, click on "Write a Business Plan. . ." in the upper right "Featured Tasks" box.
This free website includes a wide variety of sample business plans. To access sample plans, click on "Business Plans" on the homepage, then select a relevant volume based on the contents listed.
Business Plans Handbook by Lynn M. Pearce (Editor)
Business Plans Handbook by