"Baguazhang (Emei Baguazhang): Theory and Applications."
By Liang, Master Shou-Yu, and Wu, Wen-Ching, and Yang, Jwing-Ming.
YMAA Publication Center, 1994. 364 pages. ISBN: 0940871300.
Instructional videotape also available.
Chinese Internal Martial Arts.
Excellent introduction to the subject. Includes many translations of seminal Baguazhang texts and sayings. Index, glossary, appendices, lists of movements. Another excellent YMAA publication. This text includes many detailed charts of Baguazhang lineages.
One reader is of the opinion that the "8 palms Master Liang presents comprises the basic Baguazhang set that seems to have been taught at the Central Kuoshu Institute at Nanking. The lineage is Fu Chen-Sung's, and the form is also known by the name of 'Old Eight Palms.' ... The "Swimming Dragon" form presented seems to have come from Sun Lu Tang's lineage."
Bagua Zhang: Links, Bibliography, Resources, Quotes, Notes. By Mike Garofalo.