Ragmala Singh Ashok. Rāgmālā Nirṇai. Amritsar, n.d. 3. Surindar Siṅgh Kohli. A Critical Study of Adi Granth. Delhi, 1961 4. Max Arthur Macauliffe. The Sikh Religion: Its Gurus, Sacred Writings and Authors. Oxford, 1909 5. Professor Sahib Singh. About the Compilation of Sri Guru Granth Sahib (Tr. Daljit Singh). Amritsar, 1996 6. Madan Singh. Raag Maala - A Re-appraisal in the Context of Sri Guru Granth Sahib Ji. Amritsar, 2003. 7. Taran Singh. Ragmala. The Encyclopaedia of Sikhism, Vol. III. Ed. Harbans Singh. Punjabi University, Patiala, 1997. P 426. 8. Kavi Santokh Singh. Sri Gur Partap Suraj Granth. https://web.archive.org/web/20080905180746/http://www.ik13.com/Rasses/SGPS%20Raas%203.pdf Ragmala Ragmala
Sikh scriptures They have been referred to as the "Key to the Sri Guru Granth Sahib" by Guru Arjan Dev, the fifth Sikh guru. He was the first scribe of Guru Granth Sahib and a scholar of great repute. From his work, it is clear that he had mastery of various Indian languages and had studied many ancient Indian religious scriptures. Panjab Digital Library in collaboration with the Nanakshahi Trust took up digitization of Sikh scriptures in 2003. Thousands of manuscripts have been digitized and are available online at Panjab Digital Library. Sikh scriptures The principal Sikh scripture is the "Adi Granth"