MLA

Brown, Howard Mayer, and Stanley Sadie. Performance Practice: Music After 1600. London: Macmillan, 1989.

APA

Brown, H. Mayer, & Sadie, S. (1989). Performance Practice: Music after 1600. London: Macmillan.

Chicago

Brown, Howard Mayer ed., and Stanley Sadie ed. Performance Practice:: Music After 1600. London: Macmillan, 1989.