APA (7th ed.) Citation

Blesh, R., & Janis, H. (1971). They all played ragtime / by Rudi Blesh and Harriet Janis ([4th ed.].). Oak Publications ;.

Chicago Style (17th ed.) Citation

Blesh, Rudi, and Harriet Janis. They All Played Ragtime / by Rudi Blesh and Harriet Janis. [4th ed.]. New York ; London: Oak Publications ;, 1971.

MLA (9th ed.) Citation

Blesh, Rudi, and Harriet Janis. They All Played Ragtime / by Rudi Blesh and Harriet Janis. [4th ed.]. Oak Publications ;, 1971.

Warning: These citations may not always be 100% accurate.