APA (7e ed.) Bronvermelding

Luther, W. M. (1987). How to develop a business plan in 15 days. American Management Association.

Chicago (17e ed.) Bronvermelding

Luther, William M. How to Develop a Business Plan in 15 Days. New York, NY: American Management Association, 1987.

MLA (9e ed.) Bronvermelding

Luther, William M. How to Develop a Business Plan in 15 Days. American Management Association, 1987.