Playford, J., Campion, T., Simpson, C., & Early English Books Online. (1662). A brief introduction to the skill of musick: In two books : first book contains the grounds and rules of musick, the second, instructions for the viol and also the treble-violin. London: Printed for J. Playford and are sold at his shop ...MLA Citation
Playford, John, Thomas Campion, Christopher Simpson, and Early English Books Online. A Brief Introduction to the Skill of Musick: In Two Books : First Book Contains the Grounds and Rules of Musick, the Second, Instructions for the Viol and Also the Treble-violin. London: Printed for J. Playford and are sold at his shop .., 1662.