APA (7th ed.) Citation

Poston, E. (1960). Trio for flute, clarinet (or viola), and harp (or piano) (Special order edition.). J. & W. Chester.

Chicago Style (17th ed.) Citation

Poston, Elizabeth. Trio for Flute, Clarinet (or Viola), and Harp (or Piano). Special order edition. London, [England]: J. & W. Chester, 1960.

MLA (9th ed.) Citation

Poston, Elizabeth. Trio for Flute, Clarinet (or Viola), and Harp (or Piano). Special order edition. J. & W. Chester, 1960.