Chun-Ho Yang, Young-Hoon Kwon, Jeong-Sun Kim,. “Effects Of Perceived Freedom On The Psychological Well-Being Of Participants In Marine Leisure Sports”. Design Engineering (August 30, 2021): 4775-4784. Accessed April 28, 2024. http://www.thedesignengineering.com/index.php/DE/article/view/3870.