APA (7th ed.) Citation

Kline, S., & Heller, J. (1999). Horrible harry and the purple people (Unabridged.). Recorded Books Inc..

Chicago Style (17th ed.) Citation

Kline, Suzy, and Johnny Heller. Horrible Harry and the Purple People. Unabridged. Prince Frederick: Recorded Books Inc., 1999.

MLA (8th ed.) Citation

Kline, Suzy, and Johnny Heller. Horrible Harry and the Purple People. Unabridged. Recorded Books Inc., 1999.

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