Cita APA (7th ed.)

Helm, E. E. (1989). Thematic catalogue of the works of Carl Philipp Emanuel Bach: E. Eugene Helm. Yale University Press.

Cita Chicago (17th ed.)

Helm, E. Eugene. Thematic Catalogue of the Works of Carl Philipp Emanuel Bach: E. Eugene Helm. New Haven [u.a.]: Yale University Press, 1989.

Cita MLA (8th ed.)

Helm, E. Eugene. Thematic Catalogue of the Works of Carl Philipp Emanuel Bach: E. Eugene Helm. Yale University Press, 1989.