APA (7th ed.) Citation

Joo-young, K., & Kyung-ja, C. (1990). The sound of thunder. Si-sa-yong o-sa, Inc.

Chicago Style (17th ed.) Citation

Joo-young, Kim, and Chun Kyung-ja. The Sound of Thunder. Seoul, [South] Korea: Si-sa-yong o-sa, Inc, 1990.

MLA (9th ed.) Citation

Joo-young, Kim, and Chun Kyung-ja. The Sound of Thunder. Si-sa-yong o-sa, Inc, 1990.