APA aipamena

Douglas, M. R. (1968). How to make a habit of succeeding. New York: Pyramid Books.

Chicago Style aipamena

Douglas, Mack R. How to Make a Habit of Succeeding. New York: Pyramid Books, 1968.

MLA aipamena

Douglas, Mack R. How to Make a Habit of Succeeding. New York: Pyramid Books, 1968.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.