Maratta, R. (1981). Drills and performance objectives for coaching track and field: Featuring the challenge method. Parker.
芝加哥风格引文Maratta, Roy. Drills and Performance Objectives for Coaching Track and Field: Featuring the Challenge Method. West Nyack, N. Y: Parker, 1981.
MLA引文Maratta, Roy. Drills and Performance Objectives for Coaching Track and Field: Featuring the Challenge Method. Parker, 1981.
警告：这些引文格式不一定是100％准确.