APA (7th ed.) Citation

Kramer, A. W., & Martens, F. H. (1913). A nocturne, op.34, no.4. John Church.

Chicago Style (17th ed.) Citation

Kramer, Arthur Walter, and Frederick H. Martens. A Nocturne, Op.34, No.4. Cincinnati: John Church, 1913.

MLA (9th ed.) Citation

Kramer, Arthur Walter, and Frederick H. Martens. A Nocturne, Op.34, No.4. John Church, 1913.