APA
McWilliams P. R. J., . (1989). You can't afford the luxury of a negative thought. Los Angeles: Prelude Press.
Chicago
McWilliams Peter Roger John, . 1989. You can't afford the luxury of a negative thought. Los Angeles: Prelude Press.
Harvard
McWilliams P. R. J., . (1989). You can't afford the luxury of a negative thought. Los Angeles: Prelude Press.
MLA
McWilliams Peter Roger John, . You can't afford the luxury of a negative thought. Los Angeles: Prelude Press. 1989.
