Cita APA (7th ed.)

Lütgen, B. (1902). Studies in velocity. G. Schirmer.

Cita Chicago (17th ed.)

Lütgen, B. Studies in Velocity. Nueva York: G. Schirmer, 1902.

Cita MLA (9th ed.)

Lütgen, B. Studies in Velocity. G. Schirmer, 1902.