Cita APA (7th ed.)

Sevcik, O. (1949). Changing the positions, op. 8. Elkan-Vogel.

Cita Chicago (17th ed.)

Sevcik, Otakar. Changing the Positions, Op. 8. Nueva York: Elkan-Vogel, 1949.

Cita MLA (9th ed.)

Sevcik, Otakar. Changing the Positions, Op. 8. Elkan-Vogel, 1949.