Apart from the Books mentioned above there are also some good books to have a look and these are :

Clinical Orthopaedic Examination By Ronald Macrae.

Management of Common Musculoskeletal Disorders, Physical Therapy Principles and Methods, Second Edition, By Darlene Hertling and Randolph M. Kessler.

Mobilisation of Spine, A Primary handbook of Clinical Methods, Fifth Edition by Gregory P. Grieve.

TextBook of Orthopaedic Medicine, Volume one, Diagnosis of Soft Tissue Lesions, 8th edition by James Cyriax.

Muscle testing, Techniques of Manual examination, 7th edition by Hislop and Montgomery