Watson, T. j. P. (1990). Father Son & Co. Business Plus.
Chicago Style aipamenaWatson, Thomas j; Petre. Father Son & Co. New York: Business Plus, 1990.
MLA aipamenaWatson, Thomas j; Petre. Father Son & Co. Business Plus, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.