Rule, R. C. (2004). Rule's book of business plans for start ups: Create a winning plan that you can take to the bank (2nd ed.). Entrepreneur Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Rule, Roger C. Rule's Book of Business Plans for Start Ups: Create a Winning Plan That You Can Take to the Bank. 2nd ed. Madison, Wis: Entrepreneur Press, 2004.
Παραπομπή σε μορφή MLA (9th εκδ.)Rule, Roger C. Rule's Book of Business Plans for Start Ups: Create a Winning Plan That You Can Take to the Bank. 2nd ed. Entrepreneur Press, 2004.
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