Cheng, R. (2007). Practical chess exercises: 600 lessons from tactics to strategy. Tucson, AZ: Wheatmark.
Chicago-стиль цитированияCheng, Ray. Practical Chess Exercises: 600 Lessons From Tactics to Strategy. Tucson, AZ: Wheatmark, 2007.
MLA-цитированиеCheng, Ray. Practical Chess Exercises: 600 Lessons From Tactics to Strategy. Tucson, AZ: Wheatmark, 2007.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.