Cita APA (7a ed.)

Ployhar, J., & Weber, F. (1969). French horn student: Level one (Elementary). Belwin.

Cita Chicago Style (17a ed.)

Ployhar, James, y Fred Weber. French Horn Student: Level One (Elementary). Miami, FL: Belwin, 1969.

Cita MLA (9a ed.)

Ployhar, James, y Fred Weber. French Horn Student: Level One (Elementary). Belwin, 1969.