APA (7th ed.) Citation

Keen, R. E. (2015). Happy prisoner: The bluegrass sessions. Dualtone.

Chicago Style (17th ed.) Citation

Keen, Robert Earl. Happy Prisoner: The Bluegrass Sessions. Nashville, TN: Dualtone, 2015.

MLA (8th ed.) Citation

Keen, Robert Earl. Happy Prisoner: The Bluegrass Sessions. Dualtone, 2015.

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