Babson, R. W. (1923). Business fundamentals: How to become a successful business man. B.C. Forbes Pub. Co.
Chicago Style aipamenaBabson, Roger Ward. Business Fundamentals: How to Become a Successful Business Man. New York: B.C. Forbes Pub. Co, 1923.
MLA aipamenaBabson, Roger Ward. Business Fundamentals: How to Become a Successful Business Man. B.C. Forbes Pub. Co, 1923.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.