Liu Zi Jue. Six sounds approach to Qigong breathing exercises. Singing Dragon.
Chicago Edition CitationLiu Zi Jue. Six Sounds Approach to Qigong Breathing Exercises. London: Singing Dragon.
MLA Edition CitationLiu Zi Jue. Six Sounds Approach to Qigong Breathing Exercises. Singing Dragon.
Warning: These citations may not always be 100% accurate.