Cita APA (7th ed.)

ebrary, Inc, Butler, G., Stauffer, G. B., & Greer, M. D. (2008). About Bach. University of Illinois Press.

Cita Chicago (17th ed.)

ebrary, Inc, Gregory Butler, George B. Stauffer, i Mary Dalton Greer. About Bach. Urbana: University of Illinois Press, 2008.

Cita MLA (9th ed.)

ebrary, Inc, et al. About Bach. University of Illinois Press, 2008.