"The Disciplined Trader: Developing Winning Attitudes" by Mark Douglas is a book published in 1990 by Penguin Publishing Group. This hardcover book, with 256 pages, focuses on the development of winning attitudes for traders in the fields of economics, psychology, and business. The book covers topics such as finance, investments, and securities, offering insights into the psychological aspects of trading. Written in English, this book is a valuable resource for those looking to improve their trading skills and navigate the world of investments with a disciplined and winning mindset."