Douglas, M. R. (1968). How to make a habit of succeeding. New York: Pyramid Books.
Trích dẫn kiểu ChicagoDouglas, Mack R. How to Make a Habit of Succeeding. New York: Pyramid Books, 1968.
MLA引文Douglas, Mack R. How to Make a Habit of Succeeding. New York: Pyramid Books, 1968.
警告：這些引文格式不一定是100％准確.